3631002138 has 24 divisors (see below), whose sum is σ = 7873845408. Its totient is φ = 1209307272.

The previous prime is 3631002127. The next prime is 3631002139. The reversal of 3631002138 is 8312001363.

It is a happy number.

3631002138 is a `hidden beast` number, since 3 + 631 + 0 + 0 + 21 + 3 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (3631002139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63606 + ... + 106337.

It is an arithmetic number, because the mean of its divisors is an integer number (328076892).

Almost surely, 2^3631002138 is an apocalyptic number.

3631002138 is an abundant number, since it is smaller than the sum of its proper divisors (4242843270).

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

3631002138 is a wasteful number, since it uses less digits than its factorization.

3631002138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171138 (or 171135 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3631002138 is about 60257.7973211766. The cubic root of 3631002138 is about 1537.0057830150.

The spelling of 3631002138 in words is "three billion, six hundred thirty-one million, two thousand, one hundred thirty-eight".