1313817948 has 48 divisors (see below), whose sum is σ = 3424081920. Its totient is φ = 435639600.

The previous prime is 1313817929. The next prime is 1313817949. The reversal of 1313817948 is 8497183131.

It is a super-2 number, since 2×1313817948² = 3452235200973861408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313817949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11218 + ... + 52473.

It is an arithmetic number, because the mean of its divisors is an integer number (71335040).

Almost surely, 2^1313817948 is an apocalyptic number.

1313817948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1313817948 is an abundant number, since it is smaller than the sum of its proper divisors (2110263972).

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

1313817948 is a wasteful number, since it uses less digits than its factorization.

1313817948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63895 (or 63887 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 1313817948 is about 36246.6267120128. The cubic root of 1313817948 is about 1095.2461371999.

The spelling of 1313817948 in words is "one billion, three hundred thirteen million, eight hundred seventeen thousand, nine hundred forty-eight".