3642704638 has 16 divisors (see below), whose sum is σ = 5603696640. Its totient is φ = 1775130616.

The previous prime is 3642704617. The next prime is 3642704647. The reversal of 3642704638 is 8364072463.

It is a happy number.

It is a super-2 number, since 2×3642704638² = 26538594159413422088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3642704594 and 3642704603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58606 + ... + 103537.

It is an arithmetic number, because the mean of its divisors is an integer number (350231040).

Almost surely, 2^3642704638 is an apocalyptic number.

3642704638 is a deficient number, since it is larger than the sum of its proper divisors (1960992002).

3642704638 is a wasteful number, since it uses less digits than its factorization.

3642704638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162431.

The product of its (nonzero) digits is 580608, while the sum is 43.

The square root of 3642704638 is about 60354.8228230354. The cubic root of 3642704638 is about 1538.6552377707.

The spelling of 3642704638 in words is "three billion, six hundred forty-two million, seven hundred four thousand, six hundred thirty-eight".