315891866 has 8 divisors (see below), whose sum is σ = 486644340. Its totient is φ = 153677088.

The previous prime is 315891857. The next prime is 315891869. The reversal of 315891866 is 668198513.

315891866 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 261501241 + 54390625 = 16171^2 + 7375^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 315891866.

It is not an unprimeable number, because it can be changed into a prime (315891869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134331 + ... + 2134478.

Almost surely, 2^315891866 is an apocalyptic number.

315891866 is a deficient number, since it is larger than the sum of its proper divisors (170752474).

315891866 is a wasteful number, since it uses less digits than its factorization.

315891866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268848.

The product of its digits is 311040, while the sum is 47.

The square root of 315891866 is about 17773.3470680117. The cubic root of 315891866 is about 681.0507587142.

The spelling of 315891866 in words is "three hundred fifteen million, eight hundred ninety-one thousand, eight hundred sixty-six".