18136486690 has 32 divisors (see below), whose sum is σ = 37314282240. Its totient is φ = 6217401024.

The previous prime is 18136486673. The next prime is 18136486741. The reversal of 18136486690 is 9668463181.

It is a super-2 number, since 2×18136486690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775204 + ... + 798256.

It is an arithmetic number, because the mean of its divisors is an integer number (1166071320).

Almost surely, 2^18136486690 is an apocalyptic number.

18136486690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18136486690 is an abundant number, since it is smaller than the sum of its proper divisors (19177795550).

18136486690 is a wasteful number, since it uses less digits than its factorization.

18136486690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34306.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 18136486690 in words is "eighteen billion, one hundred thirty-six million, four hundred eighty-six thousand, six hundred ninety".