1338705944 has 8 divisors (see below), whose sum is σ = 2510073660. Its totient is φ = 669352968.

The previous prime is 1338705943. The next prime is 1338705983. The reversal of 1338705944 is 4495078331.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1338705944² = 3584267209001862272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1338705895 and 1338705904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338705943) by changing a digit.

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 as a sum of consecutive naturals, namely, 83669114 + ... + 83669129.

Almost surely, 2^1338705944 is an apocalyptic number.

It is an amenable number.

1338705944 is a deficient number, since it is larger than the sum of its proper divisors (1171367716).

1338705944 is a wasteful number, since it uses less digits than its factorization.

1338705944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167338249 (or 167338245 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 1338705944 is about 36588.3307080277. The cubic root of 1338705944 is about 1102.1187659038.

The spelling of 1338705944 in words is "one billion, three hundred thirty-eight million, seven hundred five thousand, nine hundred forty-four".