2639765332 has 12 divisors (see below), whose sum is σ = 4620670740. Its totient is φ = 1319573696.

The previous prime is 2639765309. The next prime is 2639765363. The reversal of 2639765332 is 2335679362.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 642926736 + 1996838596 = 25356^2 + 44686^2 .

It is a super-2 number, since 2×2639765332² = 13936722016058140448, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 57457 + ... + 92632.

It is an arithmetic number, because the mean of its divisors is an integer number (385055895).

Almost surely, 2^2639765332 is an apocalyptic number.

It is an amenable number.

2639765332 is a deficient number, since it is larger than the sum of its proper divisors (1980905408).

2639765332 is a wasteful number, since it uses less digits than its factorization.

2639765332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154490 (or 154488 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 46.

The square root of 2639765332 is about 51378.6466540332. The cubic root of 2639765332 is about 1382.0436939000.

The spelling of 2639765332 in words is "two billion, six hundred thirty-nine million, seven hundred sixty-five thousand, three hundred thirty-two".