381338159 has 2 divisors, whose sum is σ = 381338160. Its totient is φ = 381338158.

The previous prime is 381338143. The next prime is 381338179. The reversal of 381338159 is 951833183.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381338159 - 2⁴ = 381338143 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 (381338179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190669079 + 190669080.

It is an arithmetic number, because the mean of its divisors is an integer number (190669080).

Almost surely, 2^381338159 is an apocalyptic number.

381338159 is a deficient number, since it is larger than the sum of its proper divisors (1).

381338159 is an equidigital number, since it uses as much as digits as its factorization.

381338159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 381338159 is about 19527.8815799359. The cubic root of 381338159 is about 725.1648671432.

The spelling of 381338159 in words is "three hundred eighty-one million, three hundred thirty-eight thousand, one hundred fifty-nine".