381180677 has 2 divisors, whose sum is σ = 381180678. Its totient is φ = 381180676.

The previous prime is 381180661. The next prime is 381180689. The reversal of 381180677 is 776081183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379821121 + 1359556 = 19489^2 + 1166^2 .

It is an emirp because it is prime and its reverse (776081183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381180677 - 2⁴ = 381180661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381180607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190590338 + 190590339.

It is an arithmetic number, because the mean of its divisors is an integer number (190590339).

Almost surely, 2^381180677 is an apocalyptic number.

It is an amenable number.

381180677 is a deficient number, since it is larger than the sum of its proper divisors (1).

381180677 is an equidigital number, since it uses as much as digits as its factorization.

381180677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 381180677 is about 19523.8489289382. The cubic root of 381180677 is about 725.0650291254.

The spelling of 381180677 in words is "three hundred eighty-one million, one hundred eighty thousand, six hundred seventy-seven".