389190161 has 4 divisors (see below), whose sum is σ = 399708852. Its totient is φ = 378671472.

The previous prime is 389190157. The next prime is 389190169. The reversal of 389190161 is 161091983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 223681936 + 165508225 = 14956^2 + 12865^2 .

It is a cyclic number.

It is not a de Polignac number, because 389190161 - 2² = 389190157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389190169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5259290 + ... + 5259363.

It is an arithmetic number, because the mean of its divisors is an integer number (99927213).

Almost surely, 2^389190161 is an apocalyptic number.

It is an amenable number.

389190161 is a deficient number, since it is larger than the sum of its proper divisors (10518691).

389190161 is a wasteful number, since it uses less digits than its factorization.

389190161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10518690.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 389190161 is about 19727.9031070208. The cubic root of 389190161 is about 730.1082975628.

The spelling of 389190161 in words is "three hundred eighty-nine million, one hundred ninety thousand, one hundred sixty-one".