185196738231 has 32 divisors (see below), whose sum is σ = 301362624000. Its totient is φ = 111880859904.

The previous prime is 185196738217. The next prime is 185196738239. The reversal of 185196738231 is 132837691581.

185196738231 is a `hidden beast` number, since 1 + 8 + 519 + 67 + 38 + 2 + 31 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-185196738231 is a prime.

It is a super-2 number, since 2×185196738231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185196738239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7836186 + ... + 7859783.

It is an arithmetic number, because the mean of its divisors is an integer number (9417582000).

Almost surely, 2^185196738231 is an apocalyptic number.

185196738231 is a deficient number, since it is larger than the sum of its proper divisors (116165885769).

185196738231 is a wasteful number, since it uses less digits than its factorization.

185196738231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15696020 (or 15696014 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 185196738231 in words is "one hundred eighty-five billion, one hundred ninety-six million, seven hundred thirty-eight thousand, two hundred thirty-one".