191995834 has 16 divisors (see below), whose sum is σ = 307537920. Its totient is φ = 89696880.

The previous prime is 191995831. The next prime is 191995847. The reversal of 191995834 is 438599191.

It is not an unprimeable number, because it can be changed into a prime (191995831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51594 + ... + 55189.

It is an arithmetic number, because the mean of its divisors is an integer number (19221120).

Almost surely, 2^191995834 is an apocalyptic number.

191995834 is a deficient number, since it is larger than the sum of its proper divisors (115542086).

191995834 is a wasteful number, since it uses less digits than its factorization.

191995834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106845.

The product of its digits is 349920, while the sum is 49.

The square root of 191995834 is about 13856.2561321592. The cubic root of 191995834 is about 576.8956555847.

The spelling of 191995834 in words is "one hundred ninety-one million, nine hundred ninety-five thousand, eight hundred thirty-four".