189194811 has 24 divisors (see below), whose sum is σ = 281720880. Its totient is φ = 112137984.

The previous prime is 189194779. The next prime is 189194813. The reversal of 189194811 is 118491981.

It is a happy number.

It is not a de Polignac number, because 189194811 - 2⁵ = 189194779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189194813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 462375 + ... + 462783.

It is an arithmetic number, because the mean of its divisors is an integer number (11738370).

Almost surely, 2^189194811 is an apocalyptic number.

189194811 is a deficient number, since it is larger than the sum of its proper divisors (92526069).

189194811 is an equidigital number, since it uses as much as digits as its factorization.

189194811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 454 counting only the distinct ones).

The product of its digits is 20736, while the sum is 42.

The square root of 189194811 is about 13754.8104676146. The cubic root of 189194811 is about 574.0764617474.

It can be divided in two parts, 189 and 194811, that added together give a triangular number (195000 = T₆₂₄).

The spelling of 189194811 in words is "one hundred eighty-nine million, one hundred ninety-four thousand, eight hundred eleven".