1317972876 has 96 divisors (see below), whose sum is σ = 3472761600. Its totient is φ = 385566720.

The previous prime is 1317972871. The next prime is 1317972911. The reversal of 1317972876 is 6782797131.

It is a super-2 number, since 2×1317972876² = 3474105003743422752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1317972871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503860 + ... + 506468.

It is an arithmetic number, because the mean of its divisors is an integer number (36174600).

Almost surely, 2^1317972876 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 1317972876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1736380800).

1317972876 is an abundant number, since it is smaller than the sum of its proper divisors (2154788724).

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

1317972876 is a wasteful number, since it uses less digits than its factorization.

1317972876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2757 counting only the distinct ones).

The product of its digits is 889056, while the sum is 51.

The square root of 1317972876 is about 36303.8961545452. The cubic root of 1317972876 is about 1096.3994882967.

The spelling of 1317972876 in words is "one billion, three hundred seventeen million, nine hundred seventy-two thousand, eight hundred seventy-six".