Search a number
-
+
89018949831 = 37373531579
BaseRepresentation
bin101001011100111110…
…0010110000011000111
322111202212212012021220
41102321330112003013
52424302322343311
6104521133011423
76300654405660
oct1227174260307
9274685765256
1089018949831
1134830970629
1215304323b73
1385187bb516
1444468c4367
1524b0190206
hex14b9f160c7

89018949831 has 64 divisors (see below), whose sum is σ = 142136294400. Its totient is φ = 48528574848.

The previous prime is 89018949809. The next prime is 89018949839. The reversal of 89018949831 is 13894981098.

It is not a de Polignac number, because 89018949831 - 210 = 89018948807 is a prime.

It is a super-2 number, since 2×890189498312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89018949839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56376000 + ... + 56377578.

It is an arithmetic number, because the mean of its divisors is an integer number (2220879600).

Almost surely, 289018949831 is an apocalyptic number.

89018949831 is a deficient number, since it is larger than the sum of its proper divisors (53117344569).

89018949831 is an equidigital number, since it uses as much as digits as its factorization.

89018949831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 60.

The spelling of 89018949831 in words is "eighty-nine billion, eighteen million, nine hundred forty-nine thousand, eight hundred thirty-one".

Divisors: 1 3 7 21 37 53 111 159 259 371 777 1113 1369 1579 1961 4107 4737 5883 9583 11053 13727 28749 33159 41181 50653 58423 72557 83687 151959 175269 217671 251061 354571 408961 507899 585809 1063713 1226883 1523697 1757427 2161651 2684609 3096419 6484953 8053827 9289257 15131557 18792263 21674933 45394671 56376789 65024799 79981087 114567503 239943261 343702509 559867609 801972521 1679602827 2405917563 4238997611 12716992833 29672983277 89018949831