381707401 has 2 divisors, whose sum is σ = 381707402. Its totient is φ = 381707400.

The previous prime is 381707399. The next prime is 381707411. The reversal of 381707401 is 104707183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369562176 + 12145225 = 19224^2 + 3485^2 .

It is a cyclic number.

It is not a de Polignac number, because 381707401 - 2¹ = 381707399 is a prime.

Together with 381707399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (381707411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190853700 + 190853701.

It is an arithmetic number, because the mean of its divisors is an integer number (190853701).

Almost surely, 2^381707401 is an apocalyptic number.

It is an amenable number.

381707401 is a deficient number, since it is larger than the sum of its proper divisors (1).

381707401 is an equidigital number, since it uses as much as digits as its factorization.

381707401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 381707401 is about 19537.3335181647. Note that the first 3 decimals coincide. The cubic root of 381707401 is about 725.3988457817.

The spelling of 381707401 in words is "three hundred eighty-one million, seven hundred seven thousand, four hundred one".