2872915765 has 12 divisors (see below), whose sum is σ = 3662223876. Its totient is φ = 2163135488.

The previous prime is 2872915741. The next prime is 2872915777. The reversal of 2872915765 is 5675192782.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 641203684 + 2231712081 = 25322^2 + 47241^2 .

It is not a de Polignac number, because 2872915765 - 2¹¹ = 2872913717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 992644 + ... + 995533.

It is an arithmetic number, because the mean of its divisors is an integer number (305185323).

Almost surely, 2^2872915765 is an apocalyptic number.

It is an amenable number.

2872915765 is a deficient number, since it is larger than the sum of its proper divisors (789308111).

2872915765 is a wasteful number, since it uses less digits than its factorization.

2872915765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988216 (or 1988199 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 52.

The square root of 2872915765 is about 53599.5873584863. The cubic root of 2872915765 is about 1421.5897960125.

The spelling of 2872915765 in words is "two billion, eight hundred seventy-two million, nine hundred fifteen thousand, seven hundred sixty-five".