189145294 has 16 divisors (see below), whose sum is σ = 306463248. Its totient is φ = 87034752.

The previous prime is 189145289. The next prime is 189145301. The reversal of 189145294 is 492541981.

It is a self number, because there is not a number n which added to its sum of digits gives 189145294.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2032 + ... + 19555.

It is an arithmetic number, because the mean of its divisors is an integer number (19153953).

Almost surely, 2^189145294 is an apocalyptic number.

189145294 is a deficient number, since it is larger than the sum of its proper divisors (117317954).

189145294 is a wasteful number, since it uses less digits than its factorization.

189145294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21939.

The product of its digits is 103680, while the sum is 43.

The square root of 189145294 is about 13753.0103613718. The cubic root of 189145294 is about 574.0263740021.

The spelling of 189145294 in words is "one hundred eighty-nine million, one hundred forty-five thousand, two hundred ninety-four".