1315979457 has 8 divisors (see below), whose sum is σ = 1889611584. Its totient is φ = 809833488.

The previous prime is 1315979447. The next prime is 1315979513. The reversal of 1315979457 is 7549795131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1315979457 - 2¹⁵ = 1315946689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315979417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16871493 + ... + 16871570.

It is an arithmetic number, because the mean of its divisors is an integer number (236201448).

Almost surely, 2^1315979457 is an apocalyptic number.

It is an amenable number.

1315979457 is a deficient number, since it is larger than the sum of its proper divisors (573632127).

1315979457 is a wasteful number, since it uses less digits than its factorization.

1315979457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33743079.

The product of its digits is 1190700, while the sum is 51.

The square root of 1315979457 is about 36276.4311502661. The cubic root of 1315979457 is about 1095.8464454563.

The spelling of 1315979457 in words is "one billion, three hundred fifteen million, nine hundred seventy-nine thousand, four hundred fifty-seven".