2689121369 has 8 divisors (see below), whose sum is σ = 2970721920. Its totient is φ = 2413710000.

The previous prime is 2689121339. The next prime is 2689121417. The reversal of 2689121369 is 9631219862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2689121369 is a prime.

It is a super-2 number, since 2×2689121369² = 14462747474424868322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2689121329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546382 + ... + 1548119.

It is an arithmetic number, because the mean of its divisors is an integer number (371340240).

Almost surely, 2^2689121369 is an apocalyptic number.

It is an amenable number.

2689121369 is a deficient number, since it is larger than the sum of its proper divisors (281600551).

2689121369 is a wasteful number, since it uses less digits than its factorization.

2689121369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094591.

The product of its digits is 279936, while the sum is 47.

The square root of 2689121369 is about 51856.7388966950. The cubic root of 2689121369 is about 1390.6039797110.

The spelling of 2689121369 in words is "two billion, six hundred eighty-nine million, one hundred twenty-one thousand, three hundred sixty-nine".