3639235648 has 14 divisors (see below), whose sum is σ = 7221608366. Its totient is φ = 1819617792.

The previous prime is 3639235627. The next prime is 3639235657. The reversal of 3639235648 is 8465329363.

It can be written as a sum of positive squares in only one way, i.e., 3395625984 + 243609664 = 58272^2 + 15608^2 .

It is a super-2 number, since 2×3639235648² = 26488072203347959808, which contains 22 as substring.

It is an unprimeable number.

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, 28431465 + ... + 28431592.

It is an arithmetic number, because the mean of its divisors is an integer number (515829169).

Almost surely, 2^3639235648 is an apocalyptic number.

It is an amenable number.

3639235648 is a deficient number, since it is larger than the sum of its proper divisors (3582372718).

3639235648 is an equidigital number, since it uses as much as digits as its factorization.

3639235648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56863069 (or 56863059 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 49.

The square root of 3639235648 is about 60326.0776778998. The cubic root of 3639235648 is about 1538.1666562169.

The spelling of 3639235648 in words is "three billion, six hundred thirty-nine million, two hundred thirty-five thousand, six hundred forty-eight".