189308374 has 8 divisors (see below), whose sum is σ = 285868800. Its totient is φ = 94018776.

The previous prime is 189308369. The next prime is 189308387. The reversal of 189308374 is 473803981.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 189308374.

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, 317334 + ... + 317929.

It is an arithmetic number, because the mean of its divisors is an integer number (35733600).

Almost surely, 2^189308374 is an apocalyptic number.

189308374 is a deficient number, since it is larger than the sum of its proper divisors (96560426).

189308374 is a wasteful number, since it uses less digits than its factorization.

189308374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635414.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 189308374 is about 13758.9379677357. The cubic root of 189308374 is about 574.1913007065.

The spelling of 189308374 in words is "one hundred eighty-nine million, three hundred eight thousand, three hundred seventy-four".