18690700 has 36 divisors (see below), whose sum is σ = 46354672. Its totient is φ = 6408000.

The previous prime is 18690691. The next prime is 18690719. The reversal of 18690700 is 709681.

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 11 ways as a sum of consecutive naturals, for example, 12651 + ... + 14050.

Almost surely, 2^18690700 is an apocalyptic number.

18690700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18690700 is an abundant number, since it is smaller than the sum of its proper divisors (27663972).

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

18690700 is a wasteful number, since it uses less digits than its factorization.

18690700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26722 (or 26715 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 18690700 is about 4323.2742221608. The cubic root of 18690700 is about 265.3842769507.

The spelling of 18690700 in words is "eighteen million, six hundred ninety thousand, seven hundred".