18464368608 has 192 divisors, whose sum is σ = 62309399040. Its totient is φ = 5275393920.

The previous prime is 18464368591. The next prime is 18464368633. The reversal of 18464368608 is 80686346481.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 471043 + ... + 508733.

It is an arithmetic number, because the mean of its divisors is an integer number (324528120).

Almost surely, 2^18464368608 is an apocalyptic number.

18464368608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18464368608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31154699520).

18464368608 is an abundant number, since it is smaller than the sum of its proper divisors (43845030432).

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

18464368608 is an frugal number, since it uses more digits than its factorization.

18464368608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37729 (or 37703 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

It can be divided in two parts, 1846436 and 8608, that added together give a square (1855044 = 1362²).

The spelling of 18464368608 in words is "eighteen billion, four hundred sixty-four million, three hundred sixty-eight thousand, six hundred eight".