189249286 has 8 divisors (see below), whose sum is σ = 284843664. Its totient is φ = 94301400.

The previous prime is 189249251. The next prime is 189249299. The reversal of 189249286 is 682942981.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160890 + ... + 162061.

It is an arithmetic number, because the mean of its divisors is an integer number (35605458).

Almost surely, 2^189249286 is an apocalyptic number.

189249286 is a deficient number, since it is larger than the sum of its proper divisors (95594378).

189249286 is a wasteful number, since it uses less digits than its factorization.

189249286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323246.

The product of its digits is 497664, while the sum is 49.

The square root of 189249286 is about 13756.7905414017. The cubic root of 189249286 is about 574.1315545450.

The spelling of 189249286 in words is "one hundred eighty-nine million, two hundred forty-nine thousand, two hundred eighty-six".