189199493 has 8 divisors (see below), whose sum is σ = 218658240. Its totient is φ = 160348320.

The previous prime is 189199459. The next prime is 189199513. The reversal of 189199493 is 394991981.

189199493 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.

It is a cyclic number.

It is not a de Polignac number, because 189199493 - 2⁸ = 189199237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189199193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151223 + ... + 152468.

It is an arithmetic number, because the mean of its divisors is an integer number (27332280).

Almost surely, 2^189199493 is an apocalyptic number.

It is an amenable number.

189199493 is a deficient number, since it is larger than the sum of its proper divisors (29458747).

189199493 is an equidigital number, since it uses as much as digits as its factorization.

189199493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303787.

The product of its digits is 629856, while the sum is 53.

The square root of 189199493 is about 13754.9806615640. The cubic root of 189199493 is about 574.0811972610.

The spelling of 189199493 in words is "one hundred eighty-nine million, one hundred ninety-nine thousand, four hundred ninety-three".