2689520819 has 16 divisors (see below), whose sum is σ = 2884209120. Its totient is φ = 2499033600.

The previous prime is 2689520791. The next prime is 2689520831. The reversal of 2689520819 is 9180259862.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2689520819 is a prime.

It is a super-2 number, since 2×2689520819² = 14467044471668861522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2689520219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648677 + ... + 652809.

It is an arithmetic number, because the mean of its divisors is an integer number (180263070).

Almost surely, 2^2689520819 is an apocalyptic number.

2689520819 is a deficient number, since it is larger than the sum of its proper divisors (194688301).

2689520819 is a wasteful number, since it uses less digits than its factorization.

2689520819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 2689520819 is about 51860.5902299617. The cubic root of 2689520819 is about 1390.6728311042.

The spelling of 2689520819 in words is "two billion, six hundred eighty-nine million, five hundred twenty thousand, eight hundred nineteen".