18855914902 has 16 divisors (see below), whose sum is σ = 31378104000. Its totient is φ = 8425600840.

The previous prime is 18855914897. The next prime is 18855914911. The reversal of 18855914902 is 20941955881.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18855914902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7262152 + ... + 7264747.

It is an arithmetic number, because the mean of its divisors is an integer number (1961131500).

Almost surely, 2^18855914902 is an apocalyptic number.

18855914902 is a deficient number, since it is larger than the sum of its proper divisors (12522189098).

18855914902 is a wasteful number, since it uses less digits than its factorization.

18855914902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14526971.

The product of its (nonzero) digits is 1036800, while the sum is 52.

The spelling of 18855914902 in words is "eighteen billion, eight hundred fifty-five million, nine hundred fourteen thousand, nine hundred two".