380185129 has 2 divisors, whose sum is σ = 380185130. Its totient is φ = 380185128.

The previous prime is 380185067. The next prime is 380185153. The reversal of 380185129 is 921581083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356643225 + 23541904 = 18885^2 + 4852^2 .

It is a cyclic number.

It is not a de Polignac number, because 380185129 - 2²¹ = 378087977 is a prime.

It is not a weakly prime, because it can be changed into another prime (380185189) 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, 190092564 + 190092565.

It is an arithmetic number, because the mean of its divisors is an integer number (190092565).

Almost surely, 2^380185129 is an apocalyptic number.

It is an amenable number.

380185129 is a deficient number, since it is larger than the sum of its proper divisors (1).

380185129 is an equidigital number, since it uses as much as digits as its factorization.

380185129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 380185129 is about 19498.3365700769. The cubic root of 380185129 is about 724.4332496609.

The spelling of 380185129 in words is "three hundred eighty million, one hundred eighty-five thousand, one hundred twenty-nine".