1338664818 has 8 divisors (see below), whose sum is σ = 2677329648. Its totient is φ = 446221604.

The previous prime is 1338664799. The next prime is 1338664829. The reversal of 1338664818 is 8184668331.

It is a sphenic number, since it is the product of 3 distinct primes.

1338664818 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111555396 + ... + 111555407.

It is an arithmetic number, because the mean of its divisors is an integer number (334666206).

Almost surely, 2^1338664818 is an apocalyptic number.

1338664818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1338664818 is a wasteful number, since it uses less digits than its factorization.

1338664818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223110808.

The product of its digits is 663552, while the sum is 48.

The square root of 1338664818 is about 36587.7686939228. The cubic root of 1338664818 is about 1102.1074798305.

The spelling of 1338664818 in words is "one billion, three hundred thirty-eight million, six hundred sixty-four thousand, eight hundred eighteen".