3634534640 has 40 divisors (see below), whose sum is σ = 9218503728. Its totient is φ = 1321648640.

The previous prime is 3634534639. The next prime is 3634534661. The reversal of 3634534640 is 464354363.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3634534594 and 3634534603.

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, 2064197 + ... + 2065956.

Almost surely, 2^3634534640 is an apocalyptic number.

It is an amenable number.

3634534640 is an abundant number, since it is smaller than the sum of its proper divisors (5583969088).

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

3634534640 is a wasteful number, since it uses less digits than its factorization.

3634534640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130177 (or 4130171 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 38.

The square root of 3634534640 is about 60287.1017714403. The cubic root of 3634534640 is about 1537.5040583320.

The spelling of 3634534640 in words is "three billion, six hundred thirty-four million, five hundred thirty-four thousand, six hundred forty".