386161889 has 2 divisors, whose sum is σ = 386161890. Its totient is φ = 386161888.

The previous prime is 386161799. The next prime is 386161901. The reversal of 386161889 is 988161683.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303351889 + 82810000 = 17417^2 + 9100^2 .

It is a cyclic number.

It is not a de Polignac number, because 386161889 - 2¹⁶ = 386096353 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (386166889) 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, 193080944 + 193080945.

It is an arithmetic number, because the mean of its divisors is an integer number (193080945).

Almost surely, 2^386161889 is an apocalyptic number.

It is an amenable number.

386161889 is a deficient number, since it is larger than the sum of its proper divisors (1).

386161889 is an equidigital number, since it uses as much as digits as its factorization.

386161889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 50.

The square root of 386161889 is about 19651.0022390717. The cubic root of 386161889 is about 728.2097176111.

The spelling of 386161889 in words is "three hundred eighty-six million, one hundred sixty-one thousand, eight hundred eighty-nine".