18079650 has 36 divisors (see below), whose sum is σ = 48575202. Its totient is φ = 4821120.

The previous prime is 18079627. The next prime is 18079667. The reversal of 18079650 is 5697081.

It can be written as a sum of positive squares in 3 ways, for example, as 16867449 + 1212201 = 4107^2 + 1101^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19639 + ... + 20538.

Almost surely, 2^18079650 is an apocalyptic number.

18079650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18079650 is an abundant number, since it is smaller than the sum of its proper divisors (30495552).

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

18079650 is a wasteful number, since it uses less digits than its factorization.

18079650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40195 (or 40187 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 18079650 is about 4252.0171683567. The cubic root of 18079650 is about 262.4601299990.

The spelling of 18079650 in words is "eighteen million, seventy-nine thousand, six hundred fifty".