18498656 has 24 divisors (see below), whose sum is σ = 39730824. Its totient is φ = 8408320.

The previous prime is 18498653. The next prime is 18498659. The reversal of 18498656 is 65689481.

It is an interprime number because it is at equal distance from previous prime (18498653) and next prime (18498659).

It is a self number, because there is not a number n which added to its sum of digits gives 18498656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18498653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25925 + ... + 26628.

It is an arithmetic number, because the mean of its divisors is an integer number (1655451).

Almost surely, 2^18498656 is an apocalyptic number.

18498656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18498656 is an abundant number, since it is smaller than the sum of its proper divisors (21232168).

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

18498656 is a wasteful number, since it uses less digits than its factorization.

18498656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52574 (or 52566 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 18498656 is about 4301.0063938571. The cubic root of 18498656 is about 264.4722188081.

The spelling of 18498656 in words is "eighteen million, four hundred ninety-eight thousand, six hundred fifty-six".