3640325044 has 6 divisors (see below), whose sum is σ = 6370568834. Its totient is φ = 1820162520.

The previous prime is 3640325027. The next prime is 3640325047. The reversal of 3640325044 is 4405230463.

It can be written as a sum of positive squares in only one way, i.e., 1858472100 + 1781852944 = 43110^2 + 42212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3640324997 and 3640325015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640325047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455040627 + ... + 455040634.

Almost surely, 2^3640325044 is an apocalyptic number.

It is an amenable number.

3640325044 is a deficient number, since it is larger than the sum of its proper divisors (2730243790).

3640325044 is a wasteful number, since it uses less digits than its factorization.

3640325044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910081265 (or 910081263 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 3640325044 is about 60335.1062317785. The cubic root of 3640325044 is about 1538.3201230058.

The spelling of 3640325044 in words is "three billion, six hundred forty million, three hundred twenty-five thousand, forty-four".