181845633968 has 80 divisors (see below), whose sum is σ = 363660756960. Its totient is φ = 88023656448.

The previous prime is 181845633943. The next prime is 181845633973. The reversal of 181845633968 is 869336548181.

It is a self number, because there is not a number n which added to its sum of digits gives 181845633968.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132443330 + ... + 132444702.

It is an arithmetic number, because the mean of its divisors is an integer number (4545759462).

Almost surely, 2^181845633968 is an apocalyptic number.

It is an amenable number.

181845633968 is a deficient number, since it is larger than the sum of its proper divisors (181815122992).

181845633968 is a wasteful number, since it uses less digits than its factorization.

181845633968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2368 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 62.

The spelling of 181845633968 in words is "one hundred eighty-one billion, eight hundred forty-five million, six hundred thirty-three thousand, nine hundred sixty-eight".