191434804 has 24 divisors (see below), whose sum is σ = 384703200. Its totient is φ = 82435680.

The previous prime is 191434799. The next prime is 191434813. The reversal of 191434804 is 408434191.

It is a self number, because there is not a number n which added to its sum of digits gives 191434804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113659 + ... + 115330.

It is an arithmetic number, because the mean of its divisors is an integer number (16029300).

Almost surely, 2^191434804 is an apocalyptic number.

It is an amenable number.

191434804 is an abundant number, since it is smaller than the sum of its proper divisors (193268396).

191434804 is a wasteful number, since it uses less digits than its factorization.

191434804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229023 (or 229021 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 191434804 is about 13835.9966753393. The cubic root of 191434804 is about 576.3331928016. Note that the first 3 decimals are identical.

Adding to 191434804 its reverse (408434191), we get a palindrome (599868995).

The spelling of 191434804 in words is "one hundred ninety-one million, four hundred thirty-four thousand, eight hundred four".