18498918 has 16 divisors (see below), whose sum is σ = 37785600. Its totient is φ = 6035016.

The previous prime is 18498863. The next prime is 18498937. The reversal of 18498918 is 81989481.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32518 + ... + 33081.

It is an arithmetic number, because the mean of its divisors is an integer number (2361600).

Almost surely, 2^18498918 is an apocalyptic number.

18498918 is an abundant number, since it is smaller than the sum of its proper divisors (19286682).

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

18498918 is a wasteful number, since it uses less digits than its factorization.

18498918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65651.

The product of its digits is 165888, while the sum is 48.

The square root of 18498918 is about 4301.0368517370. The cubic root of 18498918 is about 264.4734673924.

The spelling of 18498918 in words is "eighteen million, four hundred ninety-eight thousand, nine hundred eighteen".