815316379 has 16 divisors (see below), whose sum is σ = 890293248. Its totient is φ = 743663232.

The previous prime is 815316373. The next prime is 815316389. The reversal of 815316379 is 973613518.

It is not a de Polignac number, because 815316379 - 2¹³ = 815308187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (815316373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77344 + ... + 87250.

It is an arithmetic number, because the mean of its divisors is an integer number (55643328).

Almost surely, 2^815316379 is an apocalyptic number.

815316379 is a deficient number, since it is larger than the sum of its proper divisors (74976869).

815316379 is a wasteful number, since it uses less digits than its factorization.

815316379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10074.

The product of its digits is 136080, while the sum is 43.

The square root of 815316379 is about 28553.7454460882. The cubic root of 815316379 is about 934.2047167145.

The spelling of 815316379 in words is "eight hundred fifteen million, three hundred sixteen thousand, three hundred seventy-nine".