18391900150 has 24 divisors (see below), whose sum is σ = 36840392064. Its totient is φ = 6790855200.

The previous prime is 18391900133. The next prime is 18391900169. The reversal of 18391900150 is 5100919381.

It is a happy number.

It is a super-2 number, since 2×18391900150² (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 14146966 + ... + 14148265.

It is an arithmetic number, because the mean of its divisors is an integer number (1535016336).

Almost surely, 2^18391900150 is an apocalyptic number.

18391900150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18391900150 is an abundant number, since it is smaller than the sum of its proper divisors (18448491914).

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

18391900150 is a wasteful number, since it uses less digits than its factorization.

18391900150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28295256 (or 28295251 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 37.

The spelling of 18391900150 in words is "eighteen billion, three hundred ninety-one million, nine hundred thousand, one hundred fifty".