2691968429 has 2 divisors, whose sum is σ = 2691968430. Its totient is φ = 2691968428.

The previous prime is 2691968423. The next prime is 2691968437. The reversal of 2691968429 is 9248691962.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2552775625 + 139192804 = 50525^2 + 11798^2 .

It is a cyclic number.

It is not a de Polignac number, because 2691968429 - 2²⁰ = 2690919853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2691968423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345984214 + 1345984215.

It is an arithmetic number, because the mean of its divisors is an integer number (1345984215).

Almost surely, 2^2691968429 is an apocalyptic number.

It is an amenable number.

2691968429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691968429 is an equidigital number, since it uses as much as digits as its factorization.

2691968429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 56.

The square root of 2691968429 is about 51884.1828402453. The cubic root of 2691968429 is about 1391.0945657952.

The spelling of 2691968429 in words is "two billion, six hundred ninety-one million, nine hundred sixty-eight thousand, four hundred twenty-nine".