381636308 has 12 divisors (see below), whose sum is σ = 679183680. Its totient is φ = 187583832.

The previous prime is 381636293. The next prime is 381636329. The reversal of 381636308 is 803636183.

381636308 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 808316 + ... + 808787.

It is an arithmetic number, because the mean of its divisors is an integer number (56598640).

Almost surely, 2^381636308 is an apocalyptic number.

It is an amenable number.

381636308 is a deficient number, since it is larger than the sum of its proper divisors (297547372).

381636308 is a wasteful number, since it uses less digits than its factorization.

381636308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617166 (or 1617164 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 381636308 is about 19535.5140193444. The cubic root of 381636308 is about 725.3538078093.

The spelling of 381636308 in words is "three hundred eighty-one million, six hundred thirty-six thousand, three hundred eight".