18425307136 has 28 divisors (see below), whose sum is σ = 36848381472. Its totient is φ = 9212649472.

The previous prime is 18425307127. The next prime is 18425307161. The reversal of 18425307136 is 63170352481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1116400 + ... + 1132783.

It is an arithmetic number, because the mean of its divisors is an integer number (1316013624).

Almost surely, 2^18425307136 is an apocalyptic number.

18425307136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18425307136 is a deficient number, since it is larger than the sum of its proper divisors (18423074336).

18425307136 is an frugal number, since it uses more digits than its factorization.

18425307136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249209 (or 2249185 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 18425307136 in words is "eighteen billion, four hundred twenty-five million, three hundred seven thousand, one hundred thirty-six".