189194719 has 8 divisors (see below), whose sum is σ = 216622208. Its totient is φ = 161867160.

The previous prime is 189194713. The next prime is 189194741. The reversal of 189194719 is 917491981.

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

It is not a de Polignac number, because 189194719 - 2⁷ = 189194591 is a prime.

It is a super-2 number, since 2×189194719² = 71589283394977922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189194713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20877 + ... + 28534.

It is an arithmetic number, because the mean of its divisors is an integer number (27077776).

Almost surely, 2^189194719 is an apocalyptic number.

189194719 is a deficient number, since it is larger than the sum of its proper divisors (27427489).

189194719 is an equidigital number, since it uses as much as digits as its factorization.

189194719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49965.

The product of its digits is 163296, while the sum is 49.

The square root of 189194719 is about 13754.8071233296. The cubic root of 189194719 is about 574.0763686951.

The spelling of 189194719 in words is "one hundred eighty-nine million, one hundred ninety-four thousand, seven hundred nineteen".