18341431576 has 64 divisors (see below), whose sum is σ = 39170476800. Its totient is φ = 7981545600.

The previous prime is 18341431561. The next prime is 18341431583. The reversal of 18341431576 is 67513414381.

It is a super-2 number, since 2×18341431576² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394941 + ... + 438931.

It is an arithmetic number, because the mean of its divisors is an integer number (612038700).

Almost surely, 2^18341431576 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 18341431576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19585238400).

18341431576 is an abundant number, since it is smaller than the sum of its proper divisors (20829045224).

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

18341431576 is a wasteful number, since it uses less digits than its factorization.

18341431576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44240 (or 44236 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The spelling of 18341431576 in words is "eighteen billion, three hundred forty-one million, four hundred thirty-one thousand, five hundred seventy-six".