191165982 has 16 divisors (see below), whose sum is σ = 436950912. Its totient is φ = 54618840.

The previous prime is 191165981. The next prime is 191166023. The reversal of 191165982 is 289561191.

191165982 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 4551571 = 191165982 / (1 + 9 + 1 + 1 + 6 + 5 + 9 + 8 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191165981) 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, 2275744 + ... + 2275827.

It is an arithmetic number, because the mean of its divisors is an integer number (27309432).

Almost surely, 2^191165982 is an apocalyptic number.

191165982 is an abundant number, since it is smaller than the sum of its proper divisors (245784930).

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

191165982 is a wasteful number, since it uses less digits than its factorization.

191165982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551583.

The product of its digits is 38880, while the sum is 42.

The square root of 191165982 is about 13826.2786750449. The cubic root of 191165982 is about 576.0632947902.

The spelling of 191165982 in words is "one hundred ninety-one million, one hundred sixty-five thousand, nine hundred eighty-two".