191339434 has 48 divisors (see below), whose sum is σ = 345790944. Its totient is φ = 78686400.

The previous prime is 191339429. The next prime is 191339453. The reversal of 191339434 is 434933191.

It is a super-2 number, since 2×191339434² = 73221558006880712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 191339393 and 191339402.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 196569 + ... + 197539.

It is an arithmetic number, because the mean of its divisors is an integer number (7203978).

Almost surely, 2^191339434 is an apocalyptic number.

191339434 is a deficient number, since it is larger than the sum of its proper divisors (154451510).

191339434 is a wasteful number, since it uses less digits than its factorization.

191339434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1050 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 191339434 is about 13832.5498011032. The cubic root of 191339434 is about 576.2374700011.

The spelling of 191339434 in words is "one hundred ninety-one million, three hundred thirty-nine thousand, four hundred thirty-four".