315838849 has 4 divisors (see below), whose sum is σ = 316854720. Its totient is φ = 314822980.

The previous prime is 315838811. The next prime is 315838909. The reversal of 315838849 is 948838513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315838849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315838049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507469 + ... + 508090.

It is an arithmetic number, because the mean of its divisors is an integer number (79213680).

Almost surely, 2^315838849 is an apocalyptic number.

It is an amenable number.

315838849 is a deficient number, since it is larger than the sum of its proper divisors (1015871).

315838849 is a wasteful number, since it uses less digits than its factorization.

315838849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015870.

The product of its digits is 829440, while the sum is 49.

The square root of 315838849 is about 17771.8555305854. The cubic root of 315838849 is about 681.0126557090.

The spelling of 315838849 in words is "three hundred fifteen million, eight hundred thirty-eight thousand, eight hundred forty-nine".