185012138 has 8 divisors (see below), whose sum is σ = 289584288. Its totient is φ = 88484044.

The previous prime is 185012111. The next prime is 185012171. The reversal of 185012138 is 831210581.

185012138 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 185012138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010956 + ... + 2011047.

It is an arithmetic number, because the mean of its divisors is an integer number (36198036).

Almost surely, 2^185012138 is an apocalyptic number.

185012138 is a deficient number, since it is larger than the sum of its proper divisors (104572150).

185012138 is a wasteful number, since it uses less digits than its factorization.

185012138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022028.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 185012138 is about 13601.9167031709. The cubic root of 185012138 is about 569.8143829800.

The spelling of 185012138 in words is "one hundred eighty-five million, twelve thousand, one hundred thirty-eight".