1319318664 has 64 divisors (see below), whose sum is σ = 3396738240. Its totient is φ = 426762240.

The previous prime is 1319318633. The next prime is 1319318681. The reversal of 1319318664 is 4668139131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186439 + ... + 193385.

It is an arithmetic number, because the mean of its divisors is an integer number (53074035).

Almost surely, 2^1319318664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1319318664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698369120).

1319318664 is an abundant number, since it is smaller than the sum of its proper divisors (2077419576).

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

1319318664 is a wasteful number, since it uses less digits than its factorization.

1319318664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7190 (or 7186 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 1319318664 is about 36322.4264607969. The cubic root of 1319318664 is about 1096.7725408245.

The spelling of 1319318664 in words is "one billion, three hundred nineteen million, three hundred eighteen thousand, six hundred sixty-four".