3634644032 has 28 divisors (see below), whose sum is σ = 7244021580. Its totient is φ = 1809378816.

The previous prime is 3634643981. The next prime is 3634644053. The reversal of 3634644032 is 2304464363.

It can be written as a sum of positive squares in 2 ways, for example, as 2140357696 + 1494286336 = 46264^2 + 38656^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3634643983 and 3634644001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109343 + ... + 138654.

Almost surely, 2^3634644032 is an apocalyptic number.

3634644032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3634644032 is a deficient number, since it is larger than the sum of its proper divisors (3609377548).

3634644032 is a wasteful number, since it uses less digits than its factorization.

3634644032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248238 (or 248228 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 35.

The square root of 3634644032 is about 60288.0090233539. The cubic root of 3634644032 is about 1537.5194834114.

The spelling of 3634644032 in words is "three billion, six hundred thirty-four million, six hundred forty-four thousand, thirty-two".