1315577897 has 8 divisors (see below), whose sum is σ = 1393267776. Its totient is φ = 1239595632.

The previous prime is 1315577873. The next prime is 1315577909. The reversal of 1315577897 is 7987755131.

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

It is a cyclic number.

It is not a de Polignac number, because 1315577897 - 2³⁰ = 241836073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315577867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425318 + ... + 428399.

It is an arithmetic number, because the mean of its divisors is an integer number (174158472).

Almost surely, 2^1315577897 is an apocalyptic number.

It is an amenable number.

1315577897 is a deficient number, since it is larger than the sum of its proper divisors (77689879).

1315577897 is an equidigital number, since it uses as much as digits as its factorization.

1315577897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853807.

The product of its digits is 1852200, while the sum is 53.

The square root of 1315577897 is about 36270.8960049238. The cubic root of 1315577897 is about 1095.7349713593.

The spelling of 1315577897 in words is "one billion, three hundred fifteen million, five hundred seventy-seven thousand, eight hundred ninety-seven".