3564491969 has 2 divisors, whose sum is σ = 3564491970. Its totient is φ = 3564491968.

The previous prime is 3564491951. The next prime is 3564491971. The reversal of 3564491969 is 9691944653.

3564491969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3142723600 + 421768369 = 56060^2 + 20537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3564491969 is a prime.

It is a super-2 number, since 2×3564491969² = 25411205994130993922, which contains 22 as substring.

Together with 3564491971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3564491369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1782245984 + 1782245985.

It is an arithmetic number, because the mean of its divisors is an integer number (1782245985).

Almost surely, 2^3564491969 is an apocalyptic number.

It is an amenable number.

3564491969 is a deficient number, since it is larger than the sum of its proper divisors (1).

3564491969 is an equidigital number, since it uses as much as digits as its factorization.

3564491969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 56.

The square root of 3564491969 is about 59703.3664796216. The cubic root of 3564491969 is about 1527.5632919149.

The spelling of 3564491969 in words is "three billion, five hundred sixty-four million, four hundred ninety-one thousand, nine hundred sixty-nine".