191371434 has 8 divisors (see below), whose sum is σ = 382742880. Its totient is φ = 63790476.

The previous prime is 191371429. The next prime is 191371469. The reversal of 191371434 is 434173191.

It is a sphenic number, since it is the product of 3 distinct primes.

191371434 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 191371395 and 191371404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15947614 + ... + 15947625.

It is an arithmetic number, because the mean of its divisors is an integer number (47842860).

Almost surely, 2^191371434 is an apocalyptic number.

191371434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191371434 is a wasteful number, since it uses less digits than its factorization.

191371434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31895244.

The product of its digits is 9072, while the sum is 33.

The square root of 191371434 is about 13833.7064447674. The cubic root of 191371434 is about 576.2695919232.

The spelling of 191371434 in words is "one hundred ninety-one million, three hundred seventy-one thousand, four hundred thirty-four".