18369588864 has 256 divisors, whose sum is σ = 54283714560. Its totient is φ = 5503196160.

The previous prime is 18369588851. The next prime is 18369588877. The reversal of 18369588864 is 46888596381.

It is an interprime number because it is at equal distance from previous prime (18369588851) and next prime (18369588877).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 18369588795 and 18369588804.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64910067 + ... + 64910349.

It is an arithmetic number, because the mean of its divisors is an integer number (212045760).

Almost surely, 2^18369588864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18369588864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27141857280).

18369588864 is an abundant number, since it is smaller than the sum of its proper divisors (35914125696).

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

18369588864 is a wasteful number, since it uses less digits than its factorization.

18369588864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 426 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 66.

The spelling of 18369588864 in words is "eighteen billion, three hundred sixty-nine million, five hundred eighty-eight thousand, eight hundred sixty-four".