18808894 has 32 divisors (see below), whose sum is σ = 32223744. Its totient is φ = 8168160.

The previous prime is 18808877. The next prime is 18808897. The reversal of 18808894 is 49880881.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18808897) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 42237 + ... + 42679.

It is an arithmetic number, because the mean of its divisors is an integer number (1006992).

Almost surely, 2^18808894 is an apocalyptic number.

18808894 is a deficient number, since it is larger than the sum of its proper divisors (13414850).

18808894 is a wasteful number, since it uses less digits than its factorization.

18808894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 18808894 is about 4336.9221805331. The cubic root of 18808894 is about 265.9425036376.

The spelling of 18808894 in words is "eighteen million, eight hundred eight thousand, eight hundred ninety-four".