2641649219 has 4 divisors (see below), whose sum is σ = 2881799160. Its totient is φ = 2401499280.

The previous prime is 2641649177. The next prime is 2641649279. The reversal of 2641649219 is 9129461462.

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 2641649219 - 2⁸ = 2641648963 is a prime.

It is a super-2 number, since 2×2641649219² = 13956621192486619922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2641649219.

It is not an unprimeable number, because it can be changed into a prime (2641649279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120074954 + ... + 120074975.

It is an arithmetic number, because the mean of its divisors is an integer number (720449790).

Almost surely, 2^2641649219 is an apocalyptic number.

2641649219 is a deficient number, since it is larger than the sum of its proper divisors (240149941).

2641649219 is a wasteful number, since it uses less digits than its factorization.

2641649219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240149940.

The product of its digits is 186624, while the sum is 44.

The square root of 2641649219 is about 51396.9767496105. The cubic root of 2641649219 is about 1382.3723841058.

The spelling of 2641649219 in words is "two billion, six hundred forty-one million, six hundred forty-nine thousand, two hundred nineteen".