2196786769 has 4 divisors (see below), whose sum is σ = 2196945844. Its totient is φ = 2196627696.

The previous prime is 2196786751. The next prime is 2196786793. The reversal of 2196786769 is 9676876912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97772544 + 2099014225 = 9888^2 + 45815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2196786769 is a prime.

It is a super-2 number, since 2×2196786769² = 9651744216906918722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2196786799) 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 3 ways as a sum of consecutive naturals, for example, 56622 + ... + 87175.

It is an arithmetic number, because the mean of its divisors is an integer number (549236461).

Almost surely, 2^2196786769 is an apocalyptic number.

It is an amenable number.

2196786769 is a deficient number, since it is larger than the sum of its proper divisors (159075).

2196786769 is a wasteful number, since it uses less digits than its factorization.

2196786769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159074.

The product of its digits is 13716864, while the sum is 61.

The square root of 2196786769 is about 46869.8919243473. The cubic root of 2196786769 is about 1299.9579412428.

The spelling of 2196786769 in words is "two billion, one hundred ninety-six million, seven hundred eighty-six thousand, seven hundred sixty-nine".