185790230738 has 18 divisors (see below), whose sum is σ = 324192440133. Its totient is φ = 79622555880.

The previous prime is 185790230663. The next prime is 185790230741. The reversal of 185790230738 is 837032097581.

It can be written as a sum of positive squares in 2 ways, for example, as 150383410849 + 35406819889 = 387793^2 + 188167^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=304787.

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 185790230738.

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, 4245248 + ... + 4288788.

Almost surely, 2^185790230738 is an apocalyptic number.

185790230738 is a deficient number, since it is larger than the sum of its proper divisors (138402209395).

185790230738 is an frugal number, since it uses more digits than its factorization.

185790230738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87098 (or 43550 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 185790230738 in words is "one hundred eighty-five billion, seven hundred ninety million, two hundred thirty thousand, seven hundred thirty-eight".