185423249664 has 81 divisors (see below), whose sum is σ = 534680541759. Its totient is φ = 61800860160.

The previous prime is 185423249653. The next prime is 185423249689. The reversal of 185423249664 is 466942324581.

The square root of 185423249664 is 430608.

It is a perfect power (a square), and thus also a powerful number.

185423249664 is a `hidden beast` number, since 1 + 8 + 542 + 3 + 2 + 4 + 96 + 6 + 4 = 666.

It is a super-2 number, since 2×185423249664² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 185423249664.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20664699 + ... + 20673669.

Almost surely, 2^185423249664 is an apocalyptic number.

185423249664 is the 430608-th square number.

It is an amenable number.

185423249664 is an abundant number, since it is smaller than the sum of its proper divisors (349257292095).

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

185423249664 is an frugal number, since it uses more digits than its factorization.

185423249664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17964 (or 8976 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 185423249664 in words is "one hundred eighty-five billion, four hundred twenty-three million, two hundred forty-nine thousand, six hundred sixty-four".