380943857 has 16 divisors (see below), whose sum is σ = 444340992. Its totient is φ = 319852800.

The previous prime is 380943853. The next prime is 380943859. The reversal of 380943857 is 758349083.

It is a cyclic number.

It is not a de Polignac number, because 380943857 - 2² = 380943853 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380943853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74693 + ... + 79629.

It is an arithmetic number, because the mean of its divisors is an integer number (27771312).

Almost surely, 2^380943857 is an apocalyptic number.

It is an amenable number.

380943857 is a deficient number, since it is larger than the sum of its proper divisors (63397135).

380943857 is a wasteful number, since it uses less digits than its factorization.

380943857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 380943857 is about 19517.7830964482. The cubic root of 380943857 is about 724.9148418408.

The spelling of 380943857 in words is "three hundred eighty million, nine hundred forty-three thousand, eight hundred fifty-seven".