189009274 has 16 divisors (see below), whose sum is σ = 286414848. Its totient is φ = 93541392.

The previous prime is 189009241. The next prime is 189009287. The reversal of 189009274 is 472900981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191787 + ... + 192769.

It is an arithmetic number, because the mean of its divisors is an integer number (17900928).

Almost surely, 2^189009274 is an apocalyptic number.

189009274 is a deficient number, since it is larger than the sum of its proper divisors (97405574).

189009274 is a wasteful number, since it uses less digits than its factorization.

189009274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 189009274 is about 13748.0643728490. The cubic root of 189009274 is about 573.8887411987. Note that the first 3 decimals are identical.

The spelling of 189009274 in words is "one hundred eighty-nine million, nine thousand, two hundred seventy-four".