189197394 has 8 divisors (see below), whose sum is σ = 378394800. Its totient is φ = 63065796.

The previous prime is 189197389. The next prime is 189197401. The reversal of 189197394 is 493791981.

It is a happy number.

189197394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

189197394 is an admirable number.

It is a super-3 number, since 3×189197394³ (a number of 26 digits) contains 333 as substring.

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, 15766444 + ... + 15766455.

It is an arithmetic number, because the mean of its divisors is an integer number (47299350).

Almost surely, 2^189197394 is an apocalyptic number.

189197394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189197394 is a wasteful number, since it uses less digits than its factorization.

189197394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31532904.

The product of its digits is 489888, while the sum is 51.

The square root of 189197394 is about 13754.9043617177. The cubic root of 189197394 is about 574.0790742799.

The spelling of 189197394 in words is "one hundred eighty-nine million, one hundred ninety-seven thousand, three hundred ninety-four".