811125194 has 24 divisors (see below), whose sum is σ = 1344151200. Its totient is φ = 366818760.

The previous prime is 811125193. The next prime is 811125221. The reversal of 811125194 is 491521118.

It is a self number, because there is not a number n which added to its sum of digits gives 811125194.

It is not an unprimeable number, because it can be changed into a prime (811125193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39737 + ... + 56579.

It is an arithmetic number, because the mean of its divisors is an integer number (56006300).

Almost surely, 2^811125194 is an apocalyptic number.

811125194 is a deficient number, since it is larger than the sum of its proper divisors (533026006).

811125194 is a wasteful number, since it uses less digits than its factorization.

811125194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17066 (or 17055 counting only the distinct ones).

The product of its digits is 2880, while the sum is 32.

The square root of 811125194 is about 28480.2597249393. The cubic root of 811125194 is about 932.6011865654.

The spelling of 811125194 in words is "eight hundred eleven million, one hundred twenty-five thousand, one hundred ninety-four".