381164677 has 2 divisors, whose sum is σ = 381164678. Its totient is φ = 381164676.

The previous prime is 381164669. The next prime is 381164683. The reversal of 381164677 is 776461183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348606241 + 32558436 = 18671^2 + 5706^2 .

It is a cyclic number.

It is not a de Polignac number, because 381164677 - 2³ = 381164669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381164617) 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, 190582338 + 190582339.

It is an arithmetic number, because the mean of its divisors is an integer number (190582339).

Almost surely, 2^381164677 is an apocalyptic number.

It is an amenable number.

381164677 is a deficient number, since it is larger than the sum of its proper divisors (1).

381164677 is an equidigital number, since it uses as much as digits as its factorization.

381164677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 381164677 is about 19523.4391693677. The cubic root of 381164677 is about 725.0548841526.

The spelling of 381164677 in words is "three hundred eighty-one million, one hundred sixty-four thousand, six hundred seventy-seven".