2163879269 has 4 divisors (see below), whose sum is σ = 2175968160. Its totient is φ = 2151790380.

The previous prime is 2163879259. The next prime is 2163879271. The reversal of 2163879269 is 9629783612.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2163879269 is a prime.

It is a super-3 number, since 3×2163879269³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 2163879269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163879209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6044177 + ... + 6044534.

It is an arithmetic number, because the mean of its divisors is an integer number (543992040).

Almost surely, 2^2163879269 is an apocalyptic number.

It is an amenable number.

2163879269 is a deficient number, since it is larger than the sum of its proper divisors (12088891).

2163879269 is a wasteful number, since it uses less digits than its factorization.

2163879269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12088890.

The product of its digits is 1959552, while the sum is 53.

The square root of 2163879269 is about 46517.5157225749. The cubic root of 2163879269 is about 1293.4342059982.

The spelling of 2163879269 in words is "two billion, one hundred sixty-three million, eight hundred seventy-nine thousand, two hundred sixty-nine".