189193151 has 8 divisors (see below), whose sum is σ = 219183264. Its totient is φ = 159943680.

The previous prime is 189193139. The next prime is 189193157. The reversal of 189193151 is 151391981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189193151 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 (189193157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184610 + ... + 185631.

It is an arithmetic number, because the mean of its divisors is an integer number (27397908).

Almost surely, 2^189193151 is an apocalyptic number.

189193151 is a deficient number, since it is larger than the sum of its proper divisors (29990113).

189193151 is an equidigital number, since it uses as much as digits as its factorization.

189193151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370321.

The product of its digits is 9720, while the sum is 38.

The square root of 189193151 is about 13754.7501249568. The cubic root of 189193151 is about 574.0747827554.

The spelling of 189193151 in words is "one hundred eighty-nine million, one hundred ninety-three thousand, one hundred fifty-one".