185440057 has 16 divisors (see below), whose sum is σ = 216976320. Its totient is φ = 156686400.

The previous prime is 185440033. The next prime is 185440069. The reversal of 185440057 is 750044581.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185440057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (185440027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2707 + ... + 19447.

It is an arithmetic number, because the mean of its divisors is an integer number (13561020).

Almost surely, 2^185440057 is an apocalyptic number.

It is an amenable number.

185440057 is a deficient number, since it is larger than the sum of its proper divisors (31536263).

185440057 is a wasteful number, since it uses less digits than its factorization.

185440057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16824.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 185440057 is about 13617.6377173135. The cubic root of 185440057 is about 570.2533571551.

The spelling of 185440057 in words is "one hundred eighty-five million, four hundred forty thousand, fifty-seven".