189641123 has 6 divisors (see below), whose sum is σ = 220602996. Its totient is φ = 162549492.

The previous prime is 189641119. The next prime is 189641149. The reversal of 189641123 is 321146981.

It is not a de Polignac number, because 189641123 - 2² = 189641119 is a prime.

It is a super-2 number, since 2×189641123² = 71927511065402258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189641183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1935065 + ... + 1935162.

It is an arithmetic number, because the mean of its divisors is an integer number (36767166).

Almost surely, 2^189641123 is an apocalyptic number.

189641123 is a deficient number, since it is larger than the sum of its proper divisors (30961873).

189641123 is an equidigital number, since it uses as much as digits as its factorization.

189641123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870241 (or 3870234 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 189641123 is about 13771.0247621591. The cubic root of 189641123 is about 574.5275241616.

The spelling of 189641123 in words is "one hundred eighty-nine million, six hundred forty-one thousand, one hundred twenty-three".