381933113 has 6 divisors (see below), whose sum is σ = 394651962. Its totient is φ = 369611760.

The previous prime is 381933077. The next prime is 381933119. The reversal of 381933113 is 311339183.

It can be written as a sum of positive squares in only one way, i.e., 262861369 + 119071744 = 16213^2 + 10912^2 .

It is not a de Polignac number, because 381933113 - 2¹² = 381929017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381933113.

It is not an unprimeable number, because it can be changed into a prime (381933119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197756 + ... + 199677.

It is an arithmetic number, because the mean of its divisors is an integer number (65775327).

Almost surely, 2^381933113 is an apocalyptic number.

It is an amenable number.

381933113 is a deficient number, since it is larger than the sum of its proper divisors (12718849).

381933113 is an equidigital number, since it uses as much as digits as its factorization.

381933113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397495 (or 397464 counting only the distinct ones).

The product of its digits is 5832, while the sum is 32.

The square root of 381933113 is about 19543.1090924653. The cubic root of 381933113 is about 725.5417990506.

The spelling of 381933113 in words is "three hundred eighty-one million, nine hundred thirty-three thousand, one hundred thirteen".