1338836965 has 16 divisors (see below), whose sum is σ = 1623670272. Its totient is φ = 1059718464.

The previous prime is 1338836963. The next prime is 1338836981. The reversal of 1338836965 is 5696388331.

It is a cyclic number.

It is not a de Polignac number, because 1338836965 - 2¹ = 1338836963 is a prime.

It is a super-2 number, since 2×1338836965² = 3584968837700822450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338836963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837547 + ... + 839143.

It is an arithmetic number, because the mean of its divisors is an integer number (101479392).

Almost surely, 2^1338836965 is an apocalyptic number.

It is an amenable number.

1338836965 is a deficient number, since it is larger than the sum of its proper divisors (284833307).

1338836965 is a wasteful number, since it uses less digits than its factorization.

1338836965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276.

The product of its digits is 2799360, while the sum is 52.

The square root of 1338836965 is about 36590.1211394551. The cubic root of 1338836965 is about 1102.1547200263.

The spelling of 1338836965 in words is "one billion, three hundred thirty-eight million, eight hundred thirty-six thousand, nine hundred sixty-five".