3649639296 has 64 divisors (see below), whose sum is σ = 9705499920. Its totient is φ = 1215148032.

The previous prime is 3649639283. The next prime is 3649639303. The reversal of 3649639296 is 6929369463.

It is a tau number, because it is divible by the number of its divisors (64).

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, 360966 + ... + 370938.

Almost surely, 2^3649639296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3649639296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4852749960).

3649639296 is an abundant number, since it is smaller than the sum of its proper divisors (6055860624).

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

3649639296 is an equidigital number, since it uses as much as digits as its factorization.

3649639296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10943 (or 10931 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 57.

The square root of 3649639296 is about 60412.2445866730. The cubic root of 3649639296 is about 1539.6310039636.

The spelling of 3649639296 in words is "three billion, six hundred forty-nine million, six hundred thirty-nine thousand, two hundred ninety-six".