18620364 has 24 divisors (see below), whose sum is σ = 49654528. Its totient is φ = 5320080.

The previous prime is 18620353. The next prime is 18620387. The reversal of 18620364 is 46302681.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110752 + ... + 110919.

Almost surely, 2^18620364 is an apocalyptic number.

18620364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18620364 is an abundant number, since it is smaller than the sum of its proper divisors (31034164).

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

18620364 is a wasteful number, since it uses less digits than its factorization.

18620364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221685 (or 221683 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 18620364 is about 4315.1319794416. The cubic root of 18620364 is about 265.0509644474.

The spelling of 18620364 in words is "eighteen million, six hundred twenty thousand, three hundred sixty-four".