185168564 has 12 divisors (see below), whose sum is σ = 370337184. Its totient is φ = 79357944.

The previous prime is 185168551. The next prime is 185168593. The reversal of 185168564 is 465861581.

185168564 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3306554 + ... + 3306609.

It is an arithmetic number, because the mean of its divisors is an integer number (30861432).

Almost surely, 2^185168564 is an apocalyptic number.

185168564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

185168564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

185168564 is a wasteful number, since it uses less digits than its factorization.

185168564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6613174 (or 6613172 counting only the distinct ones).

The product of its digits is 230400, while the sum is 44.

The square root of 185168564 is about 13607.6656337522. The cubic root of 185168564 is about 569.9749286192.

The spelling of 185168564 in words is "one hundred eighty-five million, one hundred sixty-eight thousand, five hundred sixty-four".