3880765815 has 16 divisors (see below), whose sum is σ = 6273240288. Its totient is φ = 2048403456.

The previous prime is 3880765813. The next prime is 3880765829. The reversal of 3880765815 is 5185670883.

It is not a de Polignac number, because 3880765815 - 2¹ = 3880765813 is a prime.

It is a super-2 number, since 2×3880765815² = 30120686621745228450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3880765813) 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, 1332142 + ... + 1335051.

It is an arithmetic number, because the mean of its divisors is an integer number (392077518).

Almost surely, 2^3880765815 is an apocalyptic number.

3880765815 is a deficient number, since it is larger than the sum of its proper divisors (2392474473).

3880765815 is a wasteful number, since it uses less digits than its factorization.

3880765815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667298.

The product of its (nonzero) digits is 1612800, while the sum is 51.

The square root of 3880765815 is about 62295.7929157339. The cubic root of 3880765815 is about 1571.4689775305.

The spelling of 3880765815 in words is "three billion, eight hundred eighty million, seven hundred sixty-five thousand, eight hundred fifteen".