18492918 has 16 divisors (see below), whose sum is σ = 37119936. Its totient is φ = 6141960.

The previous prime is 18492913. The next prime is 18492941. The reversal of 18492918 is 81929481.

It is a self number, because there is not a number n which added to its sum of digits gives 18492918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18492911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3748 + ... + 7143.

It is an arithmetic number, because the mean of its divisors is an integer number (2319996).

Almost surely, 2^18492918 is an apocalyptic number.

18492918 is an abundant number, since it is smaller than the sum of its proper divisors (18627018).

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

18492918 is a wasteful number, since it uses less digits than its factorization.

18492918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11179.

The product of its digits is 41472, while the sum is 42.

The square root of 18492918 is about 4300.3392889399. The cubic root of 18492918 is about 264.4448709019. Note that the first 3 decimals are identical.

The spelling of 18492918 in words is "eighteen million, four hundred ninety-two thousand, nine hundred eighteen".