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1369813445 = 571113237569
BaseRepresentation
bin101000110100101…
…1011000111000101
310112110112201210022
41101221123013011
510301133012240
6343531504525
745642136130
oct12151330705
93473481708
101369813445
11643251130
123228b8145
1318aa3c900
14cdcd5217
15803d09b5
hex51a5b1c5

1369813445 has 96 divisors (see below), whose sum is σ = 2283137280. Its totient is φ = 765573120.

The previous prime is 1369813429. The next prime is 1369813451. The reversal of 1369813445 is 5443189631.

It is not a de Polignac number, because 1369813445 - 24 = 1369813429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1369813396 and 1369813405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2407121 + ... + 2407689.

It is an arithmetic number, because the mean of its divisors is an integer number (23782680).

Almost surely, 21369813445 is an apocalyptic number.

It is an amenable number.

1369813445 is a deficient number, since it is larger than the sum of its proper divisors (913323835).

1369813445 is a wasteful number, since it uses less digits than its factorization.

1369813445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 642 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 1369813445 is about 37010.9908675788. The cubic root of 1369813445 is about 1110.5901266466.

The spelling of 1369813445 in words is "one billion, three hundred sixty-nine million, eight hundred thirteen thousand, four hundred forty-five".

Divisors: 1 5 7 11 13 35 37 55 65 77 91 143 169 185 259 385 407 455 481 569 715 845 1001 1183 1295 1859 2035 2405 2845 2849 3367 3983 5005 5291 5915 6253 6259 7397 9295 13013 14245 16835 19915 21053 26455 31265 31295 36985 37037 43771 43813 51779 65065 68783 81367 96161 105265 147371 185185 218855 219065 231583 258895 273689 343915 406835 480805 481481 569569 673127 736855 1057771 1157915 1368445 1621081 1915823 2407405 2847845 3010579 3365635 3557957 5288855 7404397 8105405 9579115 15052895 17789785 21074053 24905699 37021985 39137527 105370265 124528495 195687635 273962689 1369813445