189125851 has 4 divisors (see below), whose sum is σ = 190182600. Its totient is φ = 188069104.

The previous prime is 189125837. The next prime is 189125869. The reversal of 189125851 is 158521981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158521981 = 61 ⋅2598721.

It is a cyclic number.

It is not a de Polignac number, because 189125851 - 2⁷ = 189125723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189125891) 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, 528106 + ... + 528463.

It is an arithmetic number, because the mean of its divisors is an integer number (47545650).

Almost surely, 2^189125851 is an apocalyptic number.

189125851 is a deficient number, since it is larger than the sum of its proper divisors (1056749).

189125851 is a wasteful number, since it uses less digits than its factorization.

189125851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056748.

The product of its digits is 28800, while the sum is 40.

The square root of 189125851 is about 13752.3034797811. The cubic root of 189125851 is about 574.0067045072.

The spelling of 189125851 in words is "one hundred eighty-nine million, one hundred twenty-five thousand, eight hundred fifty-one".