381244957 has 2 divisors, whose sum is σ = 381244958. Its totient is φ = 381244956.

The previous prime is 381244901. The next prime is 381244967. The reversal of 381244957 is 759442183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328551876 + 52693081 = 18126^2 + 7259^2 .

It is an emirp because it is prime and its reverse (759442183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381244957 - 2²³ = 372856349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381244967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190622478 + 190622479.

It is an arithmetic number, because the mean of its divisors is an integer number (190622479).

Almost surely, 2^381244957 is an apocalyptic number.

It is an amenable number.

381244957 is a deficient number, since it is larger than the sum of its proper divisors (1).

381244957 is an equidigital number, since it uses as much as digits as its factorization.

381244957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 381244957 is about 19525.4950513425. The cubic root of 381244957 is about 725.1057836925.

The spelling of 381244957 in words is "three hundred eighty-one million, two hundred forty-four thousand, nine hundred fifty-seven".