18042996 has 12 divisors (see below), whose sum is σ = 42100352. Its totient is φ = 6014328.

The previous prime is 18042979. The next prime is 18043009. The reversal of 18042996 is 69924081.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 751780 + ... + 751803.

Almost surely, 2^18042996 is an apocalyptic number.

It is an amenable number.

18042996 is an abundant number, since it is smaller than the sum of its proper divisors (24057356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18042996 is a wasteful number, since it uses less digits than its factorization.

18042996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503590 (or 1503588 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 18042996 is about 4247.7047920024. The cubic root of 18042996 is about 262.2826427476.

The spelling of 18042996 in words is "eighteen million, forty-two thousand, nine hundred ninety-six".