189125279 has 4 divisors (see below), whose sum is σ = 216143184. Its totient is φ = 162107376.

The previous prime is 189125273. The next prime is 189125303. The reversal of 189125279 is 972521981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972521981 = 4273 ⋅227597.

It is a cyclic number.

It is not a de Polignac number, because 189125279 - 2¹⁶ = 189059743 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 (189125273) 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, 13508942 + ... + 13508955.

It is an arithmetic number, because the mean of its divisors is an integer number (54035796).

Almost surely, 2^189125279 is an apocalyptic number.

189125279 is a deficient number, since it is larger than the sum of its proper divisors (27017905).

189125279 is an equidigital number, since it uses as much as digits as its factorization.

189125279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27017904.

The product of its digits is 90720, while the sum is 44.

The square root of 189125279 is about 13752.2826832494. The cubic root of 189125279 is about 574.0061258234.

The spelling of 189125279 in words is "one hundred eighty-nine million, one hundred twenty-five thousand, two hundred seventy-nine".