381956207 has 2 divisors, whose sum is σ = 381956208. Its totient is φ = 381956206.

The previous prime is 381956203. The next prime is 381956219. The reversal of 381956207 is 702659183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381956207 - 2² = 381956203 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 (381956203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190978103 + 190978104.

It is an arithmetic number, because the mean of its divisors is an integer number (190978104).

Almost surely, 2^381956207 is an apocalyptic number.

381956207 is a deficient number, since it is larger than the sum of its proper divisors (1).

381956207 is an equidigital number, since it uses as much as digits as its factorization.

381956207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 381956207 is about 19543.6999311799. The cubic root of 381956207 is about 725.5564223132.

The spelling of 381956207 in words is "three hundred eighty-one million, nine hundred fifty-six thousand, two hundred seven".