2009986919 has 4 divisors (see below), whose sum is σ = 2010398496. Its totient is φ = 2009575344.

The previous prime is 2009986907. The next prime is 2009986921. The reversal of 2009986919 is 9196899002.

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 2009986919 - 2¹² = 2009982823 is a prime.

It is a super-2 number, since 2×2009986919² = 8080094829102225122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009988919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198374 + ... + 208259.

It is an arithmetic number, because the mean of its divisors is an integer number (502599624).

Almost surely, 2^2009986919 is an apocalyptic number.

2009986919 is a deficient number, since it is larger than the sum of its proper divisors (411577).

2009986919 is an equidigital number, since it uses as much as digits as its factorization.

2009986919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411576.

The product of its (nonzero) digits is 629856, while the sum is 53.

The square root of 2009986919 is about 44832.8776569160. The cubic root of 2009986919 is about 1262.0146904943.

The spelling of 2009986919 in words is "two billion, nine million, nine hundred eighty-six thousand, nine hundred nineteen".