381936634 has 8 divisors (see below), whose sum is σ = 574861140. Its totient is φ = 190316256.

The previous prime is 381936593. The next prime is 381936679. The reversal of 381936634 is 436639183.

It can be written as a sum of positive squares in 2 ways, for example, as 311628409 + 70308225 = 17653^2 + 8385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325299 + ... + 326470.

Almost surely, 2^381936634 is an apocalyptic number.

381936634 is a deficient number, since it is larger than the sum of its proper divisors (192924506).

381936634 is a wasteful number, since it uses less digits than its factorization.

381936634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652064.

The product of its digits is 279936, while the sum is 43.

The square root of 381936634 is about 19543.1991751607. The cubic root of 381936634 is about 725.5440286075.

The spelling of 381936634 in words is "three hundred eighty-one million, nine hundred thirty-six thousand, six hundred thirty-four".