189261123 has 8 divisors (see below), whose sum is σ = 252595200. Its totient is φ = 126050568.

The previous prime is 189261113. The next prime is 189261143. The reversal of 189261123 is 321162981.

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

It is not a de Polignac number, because 189261123 - 2⁵ = 189261091 is a prime.

It is a super-2 number, since 2×189261123² = 71639545358442258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189261113) 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, 27243 + ... + 33476.

It is an arithmetic number, because the mean of its divisors is an integer number (31574400).

Almost surely, 2^189261123 is an apocalyptic number.

189261123 is a deficient number, since it is larger than the sum of its proper divisors (63334077).

189261123 is a wasteful number, since it uses less digits than its factorization.

189261123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61761.

The product of its digits is 5184, while the sum is 33.

The square root of 189261123 is about 13757.2207585689. The cubic root of 189261123 is about 574.1435243894.

The spelling of 189261123 in words is "one hundred eighty-nine million, two hundred sixty-one thousand, one hundred twenty-three".