3640306940 has 12 divisors (see below), whose sum is σ = 7644644616. Its totient is φ = 1456122768.

The previous prime is 3640306939. The next prime is 3640306963. The reversal of 3640306940 is 496030463.

It is a happy number.

It is a super-4 number, since 4×3640306940⁴ (a number of 39 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3640306940.

It is a congruent number.

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, 91007654 + ... + 91007693.

It is an arithmetic number, because the mean of its divisors is an integer number (637053718).

Almost surely, 2^3640306940 is an apocalyptic number.

It is an amenable number.

3640306940 is an abundant number, since it is smaller than the sum of its proper divisors (4004337676).

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

3640306940 is a wasteful number, since it uses less digits than its factorization.

3640306940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182015356 (or 182015354 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 3640306940 is about 60334.9562028514. The cubic root of 3640306940 is about 1538.3175728862.

The spelling of 3640306940 in words is "three billion, six hundred forty million, three hundred six thousand, nine hundred forty".