380684881 has 2 divisors, whose sum is σ = 380684882. Its totient is φ = 380684880.

The previous prime is 380684879. The next prime is 380684903. The reversal of 380684881 is 188486083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368294481 + 12390400 = 19191^2 + 3520^2 .

It is a cyclic number.

It is not a de Polignac number, because 380684881 - 2¹ = 380684879 is a prime.

It is a super-2 number, since 2×380684881² = 289841957243968322, which contains 22 as substring.

Together with 380684879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (380684831) 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, 190342440 + 190342441.

It is an arithmetic number, because the mean of its divisors is an integer number (190342441).

Almost surely, 2^380684881 is an apocalyptic number.

It is an amenable number.

380684881 is a deficient number, since it is larger than the sum of its proper divisors (1).

380684881 is an equidigital number, since it uses as much as digits as its factorization.

380684881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 380684881 is about 19511.1476084827. The cubic root of 380684881 is about 724.7505323227.

The spelling of 380684881 in words is "three hundred eighty million, six hundred eighty-four thousand, eight hundred eighty-one".