191516682 has 32 divisors (see below), whose sum is σ = 439847424. Its totient is φ = 54457200.

The previous prime is 191516671. The next prime is 191516683. The reversal of 191516682 is 286615191.

It is a self number, because there is not a number n which added to its sum of digits gives 191516682.

It is not an unprimeable number, because it can be changed into a prime (191516683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1944 + ... + 19667.

It is an arithmetic number, because the mean of its divisors is an integer number (13745232).

Almost surely, 2^191516682 is an apocalyptic number.

191516682 is an abundant number, since it is smaller than the sum of its proper divisors (248330742).

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

191516682 is a wasteful number, since it uses less digits than its factorization.

191516682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21834.

The product of its digits is 25920, while the sum is 39.

The square root of 191516682 is about 13838.9552351325. The cubic root of 191516682 is about 576.4153483311.

The spelling of 191516682 in words is "one hundred ninety-one million, five hundred sixteen thousand, six hundred eighty-two".