368644638 has 16 divisors (see below), whose sum is σ = 747674496. Its totient is φ = 121150680.

The previous prime is 368644613. The next prime is 368644657. The reversal of 368644638 is 836446863.

It is a Curzon number.

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, 432256 + ... + 433107.

It is an arithmetic number, because the mean of its divisors is an integer number (46729656).

Almost surely, 2^368644638 is an apocalyptic number.

368644638 is an abundant number, since it is smaller than the sum of its proper divisors (379029858).

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

368644638 is a wasteful number, since it uses less digits than its factorization.

368644638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865439.

The product of its digits is 1990656, while the sum is 48.

The square root of 368644638 is about 19200.1207808701. The cubic root of 368644638 is about 717.0277664902.

The spelling of 368644638 in words is "three hundred sixty-eight million, six hundred forty-four thousand, six hundred thirty-eight".