18836163380 has 24 divisors (see below), whose sum is σ = 41637835680. Its totient is φ = 7137914400.

The previous prime is 18836163337. The next prime is 18836163397. The reversal of 18836163380 is 8336163881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24784046 + ... + 24784805.

It is an arithmetic number, because the mean of its divisors is an integer number (1734909820).

Almost surely, 2^18836163380 is an apocalyptic number.

18836163380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18836163380 is an abundant number, since it is smaller than the sum of its proper divisors (22801672300).

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

18836163380 is a wasteful number, since it uses less digits than its factorization.

18836163380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49568879 (or 49568877 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 18836163380 in words is "eighteen billion, eight hundred thirty-six million, one hundred sixty-three thousand, three hundred eighty".