18913854 has 32 divisors (see below), whose sum is σ = 40037760. Its totient is φ = 5940000.

The previous prime is 18913849. The next prime is 18913861. The reversal of 18913854 is 45831981.

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 15 ways as a sum of consecutive naturals, for example, 28284 + ... + 28944.

It is an arithmetic number, because the mean of its divisors is an integer number (1251180).

Almost surely, 2^18913854 is an apocalyptic number.

18913854 is an abundant number, since it is smaller than the sum of its proper divisors (21123906).

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

18913854 is a wasteful number, since it uses less digits than its factorization.

18913854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its digits is 34560, while the sum is 39.

The square root of 18913854 is about 4349.0060933505. The cubic root of 18913854 is about 266.4362693992.

The spelling of 18913854 in words is "eighteen million, nine hundred thirteen thousand, eight hundred fifty-four".