381694373 has 2 divisors, whose sum is σ = 381694374. Its totient is φ = 381694372.

The previous prime is 381694349. The next prime is 381694381. The reversal of 381694373 is 373496183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381694369 + 4 = 19537^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 381694373 - 2¹² = 381690277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381604373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190847186 + 190847187.

It is an arithmetic number, because the mean of its divisors is an integer number (190847187).

Almost surely, 2^381694373 is an apocalyptic number.

It is an amenable number.

381694373 is a deficient number, since it is larger than the sum of its proper divisors (1).

381694373 is an equidigital number, since it uses as much as digits as its factorization.

381694373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 44.

The square root of 381694373 is about 19537.0001023699. Note that the first 3 decimals coincide. The cubic root of 381694373 is about 725.3905928602.

It can be divided in two parts, 3816 and 94373, that added together give a palindrome (98189).

The spelling of 381694373 in words is "three hundred eighty-one million, six hundred ninety-four thousand, three hundred seventy-three".