189512197 has 8 divisors (see below), whose sum is σ = 217386752. Its totient is φ = 161838000.

The previous prime is 189512173. The next prime is 189512201. The reversal of 189512197 is 791215981.

189512197 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 189512197 - 2²⁷ = 55294469 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 (189512497) 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, 48054 + ... + 51847.

It is an arithmetic number, because the mean of its divisors is an integer number (27173344).

Almost surely, 2^189512197 is an apocalyptic number.

It is an amenable number.

189512197 is a deficient number, since it is larger than the sum of its proper divisors (27874555).

189512197 is an equidigital number, since it uses as much as digits as its factorization.

189512197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100179.

The product of its digits is 45360, while the sum is 43.

The square root of 189512197 is about 13766.3429057975. The cubic root of 189512197 is about 574.3972986662.

The spelling of 189512197 in words is "one hundred eighty-nine million, five hundred twelve thousand, one hundred ninety-seven".