2002191799 has 4 divisors (see below), whose sum is σ = 2013765336. Its totient is φ = 1990618264.

The previous prime is 2002191787. The next prime is 2002191803. The reversal of 2002191799 is 9971912002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2002191799 - 2¹⁵ = 2002159031 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002191749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5786509 + ... + 5786854.

It is an arithmetic number, because the mean of its divisors is an integer number (503441334).

Almost surely, 2^2002191799 is an apocalyptic number.

2002191799 is a deficient number, since it is larger than the sum of its proper divisors (11573537).

2002191799 is a wasteful number, since it uses less digits than its factorization.

2002191799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11573536.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 2002191799 is about 44745.8578976870. The cubic root of 2002191799 is about 1260.3811308178.

The spelling of 2002191799 in words is "two billion, two million, one hundred ninety-one thousand, seven hundred ninety-nine".