385022189 has 4 divisors (see below), whose sum is σ = 385061724. Its totient is φ = 384982656.

The previous prime is 385022173. The next prime is 385022207. The reversal of 385022189 is 981220583.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 981220583 = 7 ⋅140174369.

It can be written as a sum of positive squares in 2 ways, for example, as 164737225 + 220284964 = 12835^2 + 14842^2 .

It is a cyclic number.

It is not a de Polignac number, because 385022189 - 2⁴ = 385022173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385022149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6299 + ... + 28455.

It is an arithmetic number, because the mean of its divisors is an integer number (96265431).

Almost surely, 2^385022189 is an apocalyptic number.

It is an amenable number.

385022189 is a deficient number, since it is larger than the sum of its proper divisors (39535).

385022189 is a wasteful number, since it uses less digits than its factorization.

385022189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39534.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 385022189 is about 19621.9822902784. The cubic root of 385022189 is about 727.4926103885.

The spelling of 385022189 in words is "three hundred eighty-five million, twenty-two thousand, one hundred eighty-nine".