381116159 has 2 divisors, whose sum is σ = 381116160. Its totient is φ = 381116158.

The previous prime is 381116147. The next prime is 381116179. The reversal of 381116159 is 951611183.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381116159 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 (381116179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190558079 + 190558080.

It is an arithmetic number, because the mean of its divisors is an integer number (190558080).

Almost surely, 2^381116159 is an apocalyptic number.

381116159 is a deficient number, since it is larger than the sum of its proper divisors (1).

381116159 is an equidigital number, since it uses as much as digits as its factorization.

381116159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 35.

The square root of 381116159 is about 19522.1965721074. The cubic root of 381116159 is about 725.0241190549.

The spelling of 381116159 in words is "three hundred eighty-one million, one hundred sixteen thousand, one hundred fifty-nine".