380449189 has 2 divisors, whose sum is σ = 380449190. Its totient is φ = 380449188.

The previous prime is 380449163. The next prime is 380449193. The reversal of 380449189 is 981944083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295496100 + 84953089 = 17190^2 + 9217^2 .

It is a cyclic number.

It is not a de Polignac number, because 380449189 - 2⁷ = 380449061 is a prime.

It is a super-4 number, since 4×380449189⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380449109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190224594 + 190224595.

It is an arithmetic number, because the mean of its divisors is an integer number (190224595).

Almost surely, 2^380449189 is an apocalyptic number.

It is an amenable number.

380449189 is a deficient number, since it is larger than the sum of its proper divisors (1).

380449189 is an equidigital number, since it uses as much as digits as its factorization.

380449189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 380449189 is about 19505.1067415690. The cubic root of 380449189 is about 724.6009307530.

The spelling of 380449189 in words is "three hundred eighty million, four hundred forty-nine thousand, one hundred eighty-nine".