1338374664 has 80 divisors (see below), whose sum is σ = 4089499920. Its totient is φ = 405565920.

The previous prime is 1338374663. The next prime is 1338374671. The reversal of 1338374664 is 4664738331.

It is a super-2 number, since 2×1338374664² = 3582493482474225792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1338374663) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86754 + ... + 101009.

It is an arithmetic number, because the mean of its divisors is an integer number (51118749).

Almost surely, 2^1338374664 is an apocalyptic number.

It is an amenable number.

1338374664 is an abundant number, since it is smaller than the sum of its proper divisors (2751125256).

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

1338374664 is a wasteful number, since it uses less digits than its factorization.

1338374664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187792 (or 187779 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 1338374664 is about 36583.8033014612. The cubic root of 1338374664 is about 1102.0278472502.

The spelling of 1338374664 in words is "one billion, three hundred thirty-eight million, three hundred seventy-four thousand, six hundred sixty-four".