3638155606990 has 64 divisors (see below), whose sum is σ = 6925706219520. Its totient is φ = 1373862309120.

The previous prime is 3638155606963. The next prime is 3638155607071. The reversal of 3638155606990 is 996065518363.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10615287 + ... + 10952653.

It is an arithmetic number, because the mean of its divisors is an integer number (108214159680).

Almost surely, 2^{3638155606990} is an apocalyptic number.

3638155606990 is a deficient number, since it is larger than the sum of its proper divisors (3287550612530).

3638155606990 is a wasteful number, since it uses less digits than its factorization.

3638155606990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338257.

The product of its (nonzero) digits is 31492800, while the sum is 61.

The spelling of 3638155606990 in words is "three trillion, six hundred thirty-eight billion, one hundred fifty-five million, six hundred six thousand, nine hundred ninety".