381607901 has 2 divisors, whose sum is σ = 381607902. Its totient is φ = 381607900.

The previous prime is 381607871. The next prime is 381607907. The reversal of 381607901 is 109706183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357588100 + 24019801 = 18910^2 + 4901^2 .

It is a cyclic number.

It is not a de Polignac number, because 381607901 - 2¹⁴ = 381591517 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 (381607907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190803950 + 190803951.

It is an arithmetic number, because the mean of its divisors is an integer number (190803951).

Almost surely, 2^381607901 is an apocalyptic number.

It is an amenable number.

381607901 is a deficient number, since it is larger than the sum of its proper divisors (1).

381607901 is an equidigital number, since it uses as much as digits as its factorization.

381607901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 381607901 is about 19534.7869453445. The cubic root of 381607901 is about 725.3358101883.

The spelling of 381607901 in words is "three hundred eighty-one million, six hundred seven thousand, nine hundred one".