1317873740 has 24 divisors (see below), whose sum is σ = 2768245872. Its totient is φ = 527014080.

The previous prime is 1317873727. The next prime is 1317873769. The reversal of 1317873740 is 473787131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115910 + ... + 126770.

It is an arithmetic number, because the mean of its divisors is an integer number (115343578).

Almost surely, 2^1317873740 is an apocalyptic number.

1317873740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1317873740 is an abundant number, since it is smaller than the sum of its proper divisors (1450372132).

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

1317873740 is a wasteful number, since it uses less digits than its factorization.

1317873740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16937 (or 16935 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 1317873740 is about 36302.5307657744. The cubic root of 1317873740 is about 1096.3719977499.

The spelling of 1317873740 in words is "one billion, three hundred seventeen million, eight hundred seventy-three thousand, seven hundred forty".