1317990846 has 16 divisors (see below), whose sum is σ = 2636409600. Its totient is φ = 439258968.

The previous prime is 1317990787. The next prime is 1317990847. The reversal of 1317990846 is 6480997131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1317990795 and 1317990804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317990847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33645 + ... + 61383.

It is an arithmetic number, because the mean of its divisors is an integer number (164775600).

Almost surely, 2^1317990846 is an apocalyptic number.

1317990846 is an abundant number, since it is smaller than the sum of its proper divisors (1318418754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1317990846 is a wasteful number, since it uses less digits than its factorization.

1317990846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35663.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 1317990846 is about 36304.1436477987. The cubic root of 1317990846 is about 1096.4044712544.

The spelling of 1317990846 in words is "one billion, three hundred seventeen million, nine hundred ninety thousand, eight hundred forty-six".