18813030 has 16 divisors (see below), whose sum is σ = 45151344. Its totient is φ = 5016800.

The previous prime is 18813023. The next prime is 18813043. The reversal of 18813030 is 3031881.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 313521 + ... + 313580.

It is an arithmetic number, because the mean of its divisors is an integer number (2821959).

Almost surely, 2^18813030 is an apocalyptic number.

18813030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18813030 is an abundant number, since it is smaller than the sum of its proper divisors (26338314).

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

18813030 is a wasteful number, since it uses less digits than its factorization.

18813030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627111.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18813030 is about 4337.3989901783. The cubic root of 18813030 is about 265.9619954372.

The spelling of 18813030 in words is "eighteen million, eight hundred thirteen thousand, thirty".