381700807 has 2 divisors, whose sum is σ = 381700808. Its totient is φ = 381700806.

The previous prime is 381700793. The next prime is 381700817. The reversal of 381700807 is 708007183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381700807 - 2¹⁹ = 381176519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381700817) 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, 190850403 + 190850404.

It is an arithmetic number, because the mean of its divisors is an integer number (190850404).

Almost surely, 2^381700807 is an apocalyptic number.

381700807 is a deficient number, since it is larger than the sum of its proper divisors (1).

381700807 is an equidigital number, since it uses as much as digits as its factorization.

381700807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 381700807 is about 19537.1647635986. The cubic root of 381700807 is about 725.3946686663.

The spelling of 381700807 in words is "three hundred eighty-one million, seven hundred thousand, eight hundred seven".