18126293888 has 32 divisors (see below), whose sum is σ = 36370803000. Its totient is φ = 8997935616.

The previous prime is 18126293881. The next prime is 18126293897. The reversal of 18126293888 is 88839262181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×18126293888² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18126293881) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 491603 + ... + 527186.

Almost surely, 2^18126293888 is an apocalyptic number.

It is an amenable number.

18126293888 is an abundant number, since it is smaller than the sum of its proper divisors (18244509112).

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

18126293888 is a wasteful number, since it uses less digits than its factorization.

18126293888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018942 (or 1018930 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 56.

The spelling of 18126293888 in words is "eighteen billion, one hundred twenty-six million, two hundred ninety-three thousand, eight hundred eighty-eight".