381392351 has 2 divisors, whose sum is σ = 381392352. Its totient is φ = 381392350.

The previous prime is 381392321. The next prime is 381392359. The reversal of 381392351 is 153293183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381392351 - 2²² = 377198047 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 (381392359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190696175 + 190696176.

It is an arithmetic number, because the mean of its divisors is an integer number (190696176).

Almost surely, 2^381392351 is an apocalyptic number.

381392351 is a deficient number, since it is larger than the sum of its proper divisors (1).

381392351 is an equidigital number, since it uses as much as digits as its factorization.

381392351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 381392351 is about 19529.2690851450. The cubic root of 381392351 is about 725.1992165976.

The spelling of 381392351 in words is "three hundred eighty-one million, three hundred ninety-two thousand, three hundred fifty-one".