18579469440 has 512 divisors, whose sum is σ = 71084044800. Its totient is φ = 4037935104.

The previous prime is 18579469427. The next prime is 18579469453. The reversal of 18579469440 is 4496497581.

It is an interprime number because it is at equal distance from previous prime (18579469427) and next prime (18579469453).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28452154 + ... + 28452806.

It is an arithmetic number, because the mean of its divisors is an integer number (138836025).

Almost surely, 2^18579469440 is an apocalyptic number.

18579469440 is a gapful number since it is divisible by the number (10) 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 18579469440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35542022400).

18579469440 is an abundant number, since it is smaller than the sum of its proper divisors (52504575360).

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

18579469440 is a wasteful number, since it uses less digits than its factorization.

18579469440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 18579469440 in words is "eighteen billion, five hundred seventy-nine million, four hundred sixty-nine thousand, four hundred forty".