1317481408 has 14 divisors (see below), whose sum is σ = 2614377296. Its totient is φ = 658740672.

The previous prime is 1317481391. The next prime is 1317481411. The reversal of 1317481408 is 8041847131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10292760 + ... + 10292887.

Almost surely, 2^1317481408 is an apocalyptic number.

It is an amenable number.

1317481408 is a deficient number, since it is larger than the sum of its proper divisors (1296895888).

1317481408 is an equidigital number, since it uses as much as digits as its factorization.

1317481408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20585659 (or 20585649 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 1317481408 is about 36297.1267182404. The cubic root of 1317481408 is about 1096.2631900300.

The spelling of 1317481408 in words is "one billion, three hundred seventeen million, four hundred eighty-one thousand, four hundred eight".