381158741 has 2 divisors, whose sum is σ = 381158742. Its totient is φ = 381158740.

The previous prime is 381158707. The next prime is 381158759. The reversal of 381158741 is 147851183.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232684516 + 148474225 = 15254^2 + 12185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381158741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381158695 and 381158704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381158761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190579370 + 190579371.

It is an arithmetic number, because the mean of its divisors is an integer number (190579371).

Almost surely, 2^381158741 is an apocalyptic number.

It is an amenable number.

381158741 is a deficient number, since it is larger than the sum of its proper divisors (1).

381158741 is an equidigital number, since it uses as much as digits as its factorization.

381158741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 38.

The square root of 381158741 is about 19523.2871463798. The cubic root of 381158741 is about 725.0511202955.

The spelling of 381158741 in words is "three hundred eighty-one million, one hundred fifty-eight thousand, seven hundred forty-one".