191813342 has 24 divisors (see below), whose sum is σ = 338025960. Its totient is φ = 81387600.

The previous prime is 191813317. The next prime is 191813351. The reversal of 191813342 is 243318191.

It is a junction number, because it is equal to n+sod(n) for n = 191813299 and 191813308.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 209 + ... + 19587.

It is an arithmetic number, because the mean of its divisors is an integer number (14084415).

Almost surely, 2^191813342 is an apocalyptic number.

191813342 is a deficient number, since it is larger than the sum of its proper divisors (146212618).

191813342 is a wasteful number, since it uses less digits than its factorization.

191813342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19496 (or 19489 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 191813342 is about 13849.6693823354. The cubic root of 191813342 is about 576.7128179101.

The spelling of 191813342 in words is "one hundred ninety-one million, eight hundred thirteen thousand, three hundred forty-two".