3649622768 has 40 divisors (see below), whose sum is σ = 7786108800. Its totient is φ = 1643407040.

The previous prime is 3649622759. The next prime is 3649622789. The reversal of 3649622768 is 8672269463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78068 + ... + 115731.

It is an arithmetic number, because the mean of its divisors is an integer number (194652720).

Almost surely, 2^3649622768 is an apocalyptic number.

It is an amenable number.

3649622768 is an abundant number, since it is smaller than the sum of its proper divisors (4136486032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3649622768 is a wasteful number, since it uses less digits than its factorization.

3649622768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193925 (or 193919 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 53.

The square root of 3649622768 is about 60412.1077930575. The cubic root of 3649622768 is about 1539.6286798015.

The spelling of 3649622768 in words is "three billion, six hundred forty-nine million, six hundred twenty-two thousand, seven hundred sixty-eight".