18285413136 has 40 divisors (see below), whose sum is σ = 47245830240. Its totient is φ = 6094039296.

The previous prime is 18285413117. The next prime is 18285413141. The reversal of 18285413136 is 63131458281.

It is a happy 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, 260991 + ... + 323553.

It is an arithmetic number, because the mean of its divisors is an integer number (1181145756).

Almost surely, 2^18285413136 is an apocalyptic number.

18285413136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18285413136 is an abundant number, since it is smaller than the sum of its proper divisors (28960417104).

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

18285413136 is a wasteful number, since it uses less digits than its factorization.

18285413136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68663 (or 68657 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The spelling of 18285413136 in words is "eighteen billion, two hundred eighty-five million, four hundred thirteen thousand, one hundred thirty-six".