18498812 has 6 divisors (see below), whose sum is σ = 32372928. Its totient is φ = 9249404.

The previous prime is 18498811. The next prime is 18498817. The reversal of 18498812 is 21889481.

It is a super-2 number, since 2×18498812² = 684412090822688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18498812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18498811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2312348 + ... + 2312355.

It is an arithmetic number, because the mean of its divisors is an integer number (5395488).

Almost surely, 2^18498812 is an apocalyptic number.

It is an amenable number.

18498812 is a deficient number, since it is larger than the sum of its proper divisors (13874116).

18498812 is a wasteful number, since it uses less digits than its factorization.

18498812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624707 (or 4624705 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The square root of 18498812 is about 4301.0245291093. The cubic root of 18498812 is about 264.4729622414.

The spelling of 18498812 in words is "eighteen million, four hundred ninety-eight thousand, eight hundred twelve".