3640304642 has 16 divisors (see below), whose sum is σ = 6070186752. Its totient is φ = 1625942160.

The previous prime is 3640304641. The next prime is 3640304653. The reversal of 3640304642 is 2464030463.

It is a junction number, because it is equal to n+sod(n) for n = 3640304599 and 3640304608.

It is not an unprimeable number, because it can be changed into a prime (3640304641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2257448 + ... + 2259059.

It is an arithmetic number, because the mean of its divisors is an integer number (379386672).

Almost surely, 2^3640304642 is an apocalyptic number.

3640304642 is a deficient number, since it is larger than the sum of its proper divisors (2429882110).

3640304642 is a wasteful number, since it uses less digits than its factorization.

3640304642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516553.

The product of its (nonzero) digits is 41472, while the sum is 32.

The square root of 3640304642 is about 60334.9371591618. The cubic root of 3640304642 is about 1538.3172491905.

The spelling of 3640304642 in words is "three billion, six hundred forty million, three hundred four thousand, six hundred forty-two".