18390607872 has 576 divisors, whose sum is σ = 63578511360. Its totient is φ = 4682022912.

The previous prime is 18390607861. The next prime is 18390607877. The reversal of 18390607872 is 27870609381.

It is not an unprimeable number, because it can be changed into a prime (18390607877) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144807873 + ... + 144807999.

It is an arithmetic number, because the mean of its divisors is an integer number (110379360).

Almost surely, 2^18390607872 is an apocalyptic number.

18390607872 is a gapful number since it is divisible by the number (12) 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 18390607872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31789255680).

18390607872 is an abundant number, since it is smaller than the sum of its proper divisors (45187903488).

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

18390607872 is a wasteful number, since it uses less digits than its factorization.

18390607872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 18390607872 in words is "eighteen billion, three hundred ninety million, six hundred seven thousand, eight hundred seventy-two".