3640654120 has 16 divisors (see below), whose sum is σ = 8191471860. Its totient is φ = 1456261632.

The previous prime is 3640654117. The next prime is 3640654139. The reversal of 3640654120 is 214560463.

It can be written as a sum of positive squares in 2 ways, for example, as 3553828996 + 86825124 = 59614^2 + 9318^2 .

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, 45508137 + ... + 45508216.

Almost surely, 2^3640654120 is an apocalyptic number.

It is an amenable number.

3640654120 is an abundant number, since it is smaller than the sum of its proper divisors (4550817740).

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

3640654120 is a wasteful number, since it uses less digits than its factorization.

3640654120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91016364 (or 91016360 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 3640654120 is about 60337.8332391875. The cubic root of 3640654120 is about 1538.3664750004.

The spelling of 3640654120 in words is "three billion, six hundred forty million, six hundred fifty-four thousand, one hundred twenty".