2191304982 has 16 divisors (see below), whose sum is σ = 4386041280. Its totient is φ = 729863112.

The previous prime is 2191304963. The next prime is 2191304987. The reversal of 2191304982 is 2894031912.

It is a self number, because there is not a number n which added to its sum of digits gives 2191304982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191304987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134632 + ... + 150027.

It is an arithmetic number, because the mean of its divisors is an integer number (274127580).

Almost surely, 2^2191304982 is an apocalyptic number.

2191304982 is an abundant number, since it is smaller than the sum of its proper divisors (2194736298).

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

2191304982 is a wasteful number, since it uses less digits than its factorization.

2191304982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285947.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 2191304982 is about 46811.3766300458. The cubic root of 2191304982 is about 1298.8757503087.

The spelling of 2191304982 in words is "two billion, one hundred ninety-one million, three hundred four thousand, nine hundred eighty-two".