381695933 has 2 divisors, whose sum is σ = 381695934. Its totient is φ = 381695932.

The previous prime is 381695927. The next prime is 381695953. The reversal of 381695933 is 339596183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223263364 + 158432569 = 14942^2 + 12587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381695933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381695953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190847966 + 190847967.

It is an arithmetic number, because the mean of its divisors is an integer number (190847967).

Almost surely, 2^381695933 is an apocalyptic number.

It is an amenable number.

381695933 is a deficient number, since it is larger than the sum of its proper divisors (1).

381695933 is an equidigital number, since it uses as much as digits as its factorization.

381695933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 47.

The square root of 381695933 is about 19537.0400265752. The cubic root of 381695933 is about 725.3915810922.

The spelling of 381695933 in words is "three hundred eighty-one million, six hundred ninety-five thousand, nine hundred thirty-three".