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18149760930 = 2357745911587
BaseRepresentation
bin10000111001110011…
…110101111110100010
31201211212222101101210
4100321303311332202
5244132314322210
612200552210550
71211524264620
oct207163657642
951755871353
1018149760930
117774081024
123626399a56
131933277712
14c42692510
157135dbe20
hex439cf5fa2

18149760930 has 64 divisors (see below), whose sum is σ = 49793172480. Its totient is φ = 4147602624.

The previous prime is 18149760899. The next prime is 18149761067. The reversal of 18149760930 is 3906794181.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18149760930.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1560597 + ... + 1572183.

It is an arithmetic number, because the mean of its divisors is an integer number (778018320).

Almost surely, 218149760930 is an apocalyptic number.

18149760930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18149760930 is an abundant number, since it is smaller than the sum of its proper divisors (31643411550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18149760930 is a wasteful number, since it uses less digits than its factorization.

18149760930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19063.

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 18149760930 in words is "eighteen billion, one hundred forty-nine million, seven hundred sixty thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 7459 11587 14918 22377 23174 34761 37295 44754 52213 57935 69522 74590 81109 104426 111885 115870 156639 162218 173805 223770 243327 261065 313278 347610 405545 486654 522130 783195 811090 1216635 1566390 2433270 86427433 172854866 259282299 432137165 518564598 604992031 864274330 1209984062 1296411495 1814976093 2592822990 3024960155 3629952186 6049920310 9074880465 18149760930