199318315 has 16 divisors (see below), whose sum is σ = 274330368. Its totient is φ = 136185696.

The previous prime is 199318307. The next prime is 199318337. The reversal of 199318315 is 513813991.

It is a cyclic number.

It is not a de Polignac number, because 199318315 - 2³ = 199318307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157 + ... + 19966.

It is an arithmetic number, because the mean of its divisors is an integer number (17145648).

Almost surely, 2^199318315 is an apocalyptic number.

199318315 is a deficient number, since it is larger than the sum of its proper divisors (75012053).

199318315 is a wasteful number, since it uses less digits than its factorization.

199318315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20418.

The product of its digits is 29160, while the sum is 40.

The square root of 199318315 is about 14118.0138475637. The cubic root of 199318315 is about 584.1383716577.

The spelling of 199318315 in words is "one hundred ninety-nine million, three hundred eighteen thousand, three hundred fifteen".