1315807977 has 16 divisors (see below), whose sum is σ = 1923932160. Its totient is φ = 793280400.

The previous prime is 1315807937. The next prime is 1315807979. The reversal of 1315807977 is 7797085131.

It is not a de Polignac number, because 1315807977 - 2⁷ = 1315807849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315807979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98077 + ... + 110682.

It is an arithmetic number, because the mean of its divisors is an integer number (120245760).

Almost surely, 2^1315807977 is an apocalyptic number.

It is an amenable number.

1315807977 is a deficient number, since it is larger than the sum of its proper divisors (608124183).

1315807977 is a wasteful number, since it uses less digits than its factorization.

1315807977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208964.

The product of its (nonzero) digits is 370440, while the sum is 48.

The square root of 1315807977 is about 36274.0675552108. The cubic root of 1315807977 is about 1095.7988449384.

The spelling of 1315807977 in words is "one billion, three hundred fifteen million, eight hundred seven thousand, nine hundred seventy-seven".