1318159872 has 320 divisors, whose sum is σ = 4242585600. Its totient is φ = 402554880.

The previous prime is 1318159867. The next prime is 1318159967. The reversal of 1318159872 is 2789518131.

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, 16685529 + ... + 16685607.

It is an arithmetic number, because the mean of its divisors is an integer number (13258080).

Almost surely, 2^1318159872 is an apocalyptic number.

1318159872 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 1318159872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2121292800).

1318159872 is an abundant number, since it is smaller than the sum of its proper divisors (2924425728).

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

1318159872 is an equidigital number, since it uses as much as digits as its factorization.

1318159872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 172 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 1318159872 is about 36306.4714892538. The cubic root of 1318159872 is about 1096.4513387879.

The spelling of 1318159872 in words is "one billion, three hundred eighteen million, one hundred fifty-nine thousand, eight hundred seventy-two".