315187646746 has 32 divisors (see below), whose sum is σ = 551549548800. Its totient is φ = 135031201200.

The previous prime is 315187646707. The next prime is 315187646749. The reversal of 315187646746 is 647646781513.

It is a happy number.

It is a super-2 number, since 2×315187646746² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (315187646749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1832316 + ... + 1996936.

It is an arithmetic number, because the mean of its divisors is an integer number (17235923400).

Almost surely, 2^315187646746 is an apocalyptic number.

315187646746 is a deficient number, since it is larger than the sum of its proper divisors (236361902054).

315187646746 is a wasteful number, since it uses less digits than its factorization.

315187646746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167435 (or 167421 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 58.

The spelling of 315187646746 in words is "three hundred fifteen billion, one hundred eighty-seven million, six hundred forty-six thousand, seven hundred forty-six".