1343990664 has 128 divisors (see below), whose sum is σ = 3857212800. Its totient is φ = 433278720.

The previous prime is 1343990653. The next prime is 1343990693. The reversal of 1343990664 is 4660993431.

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 31 ways as a sum of consecutive naturals, for example, 1685914 + ... + 1686710.

It is an arithmetic number, because the mean of its divisors is an integer number (30134475).

Almost surely, 2^1343990664 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 1343990664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928606400).

1343990664 is an abundant number, since it is smaller than the sum of its proper divisors (2513222136).

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

1343990664 is a wasteful number, since it uses less digits than its factorization.

1343990664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 1343990664 is about 36660.4782292866. The cubic root of 1343990664 is about 1103.5671152572.

The spelling of 1343990664 in words is "one billion, three hundred forty-three million, nine hundred ninety thousand, six hundred sixty-four".