189049172 has 24 divisors (see below), whose sum is σ = 360297000. Its totient is φ = 86270976.

The previous prime is 189049153. The next prime is 189049219. The reversal of 189049172 is 271940981.

It can be written as a sum of positive squares in 4 ways, for example, as 2835856 + 186213316 = 1684^2 + 13646^2 .

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, 15797 + ... + 25052.

It is an arithmetic number, because the mean of its divisors is an integer number (15012375).

Almost surely, 2^189049172 is an apocalyptic number.

It is an amenable number.

189049172 is a deficient number, since it is larger than the sum of its proper divisors (171247828).

189049172 is a wasteful number, since it uses less digits than its factorization.

189049172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40955 (or 40953 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 189049172 is about 13749.5153369128. The cubic root of 189049172 is about 573.9291191153.

The spelling of 189049172 in words is "one hundred eighty-nine million, forty-nine thousand, one hundred seventy-two".