18393513489659 has 24 divisors (see below), whose sum is σ = 23730385101024. Its totient is φ = 13945240108800.

The previous prime is 18393513489583. The next prime is 18393513489671. The reversal of 18393513489659 is 95698431539381.

It is a de Polignac number, because none of the positive numbers 2^k-18393513489659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18393513489059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293429102 + ... + 293491779.

It is an arithmetic number, because the mean of its divisors is an integer number (988766045876).

Almost surely, 2^{18393513489659} is an apocalyptic number.

18393513489659 is a deficient number, since it is larger than the sum of its proper divisors (5336871611365).

18393513489659 is a wasteful number, since it uses less digits than its factorization.

18393513489659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586920947 (or 586920936 counting only the distinct ones).

The product of its digits is 755827200, while the sum is 74.

The spelling of 18393513489659 in words is "eighteen trillion, three hundred ninety-three billion, five hundred thirteen million, four hundred eighty-nine thousand, six hundred fifty-nine".