381359911 has 2 divisors, whose sum is σ = 381359912. Its totient is φ = 381359910.

The previous prime is 381359897. The next prime is 381359921. The reversal of 381359911 is 119953183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381359911 - 2⁵ = 381359879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381359921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190679955 + 190679956.

It is an arithmetic number, because the mean of its divisors is an integer number (190679956).

Almost surely, 2^381359911 is an apocalyptic number.

381359911 is a deficient number, since it is larger than the sum of its proper divisors (1).

381359911 is an equidigital number, since it uses as much as digits as its factorization.

381359911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 40.

The square root of 381359911 is about 19528.4385192467. The cubic root of 381359911 is about 725.1786549812.

The spelling of 381359911 in words is "three hundred eighty-one million, three hundred fifty-nine thousand, nine hundred eleven".