556163189 has 8 divisors (see below), whose sum is σ = 575822520. Its totient is φ = 536536000.

The previous prime is 556163147. The next prime is 556163197. The reversal of 556163189 is 981361655.

It can be written as a sum of positive squares in 4 ways, for example, as 62568100 + 493595089 = 7910^2 + 22217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 556163189 - 2⁸ = 556162933 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 (556163089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30359 + ... + 45099.

It is an arithmetic number, because the mean of its divisors is an integer number (71977815).

Almost surely, 2^556163189 is an apocalyptic number.

It is an amenable number.

556163189 is a deficient number, since it is larger than the sum of its proper divisors (19659331).

556163189 is a wasteful number, since it uses less digits than its factorization.

556163189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16071.

The product of its digits is 194400, while the sum is 44.

The square root of 556163189 is about 23583.1123688117. The cubic root of 556163189 is about 822.3702928288.

The spelling of 556163189 in words is "five hundred fifty-six million, one hundred sixty-three thousand, one hundred eighty-nine".