185208008164 has 9 divisors (see below), whose sum is σ = 324115520547. Its totient is φ = 92603573724.

The previous prime is 185208008149. The next prime is 185208008177. The reversal of 185208008164 is 461800802581.

The square root of 185208008164 is 430358.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 185208008164.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 753127 + ... + 968305.

Almost surely, 2^185208008164 is an apocalyptic number.

185208008164 is the 430358-th square number.

It is an amenable number.

185208008164 is a deficient number, since it is larger than the sum of its proper divisors (138907512383).

185208008164 is an frugal number, since it uses more digits than its factorization.

185208008164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430362 (or 215181 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 43.

The spelling of 185208008164 in words is "one hundred eighty-five billion, two hundred eight million, eight thousand, one hundred sixty-four".