181984492 has 6 divisors (see below), whose sum is σ = 318472868. Its totient is φ = 90992244.

The previous prime is 181984433. The next prime is 181984493. The reversal of 181984492 is 294489181.

It is not an unprimeable number, because it can be changed into a prime (181984493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22748058 + ... + 22748065.

Almost surely, 2^181984492 is an apocalyptic number.

It is an amenable number.

181984492 is a deficient number, since it is larger than the sum of its proper divisors (136488376).

181984492 is a wasteful number, since it uses less digits than its factorization.

181984492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45496127 (or 45496125 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 181984492 is about 13490.1627862676. The cubic root of 181984492 is about 566.6890142667.

The spelling of 181984492 in words is "one hundred eighty-one million, nine hundred eighty-four thousand, four hundred ninety-two".