2690842769 has 2 divisors, whose sum is σ = 2690842770. Its totient is φ = 2690842768.

The previous prime is 2690842747. The next prime is 2690842783. The reversal of 2690842769 is 9672480962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2014842769 + 676000000 = 44887^2 + 26000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2690842769 - 2⁸ = 2690842513 is a prime.

It is a super-2 number, since 2×2690842769² = 14481269614959174722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2690842769.

It is not a weakly prime, because it can be changed into another prime (2690842069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345421384 + 1345421385.

It is an arithmetic number, because the mean of its divisors is an integer number (1345421385).

Almost surely, 2^2690842769 is an apocalyptic number.

It is an amenable number.

2690842769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2690842769 is an equidigital number, since it uses as much as digits as its factorization.

2690842769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The square root of 2690842769 is about 51873.3338913165. Note that the first 3 decimals coincide. The cubic root of 2690842769 is about 1390.9006410565.

The spelling of 2690842769 in words is "two billion, six hundred ninety million, eight hundred forty-two thousand, seven hundred sixty-nine".