381601379 has 2 divisors, whose sum is σ = 381601380. Its totient is φ = 381601378.

The previous prime is 381601369. The next prime is 381601399. The reversal of 381601379 is 973106183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381601379 - 2⁸ = 381601123 is a prime.

It is a super-2 number, since 2×381601379² = 291239224909403282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (381601369) 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, 190800689 + 190800690.

It is an arithmetic number, because the mean of its divisors is an integer number (190800690).

Almost surely, 2^381601379 is an apocalyptic number.

381601379 is a deficient number, since it is larger than the sum of its proper divisors (1).

381601379 is an equidigital number, since it uses as much as digits as its factorization.

381601379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 381601379 is about 19534.6200116613. The cubic root of 381601379 is about 725.3316779651.

The spelling of 381601379 in words is "three hundred eighty-one million, six hundred one thousand, three hundred seventy-nine".