5640191969 has 2 divisors, whose sum is σ = 5640191970. Its totient is φ = 5640191968.

The previous prime is 5640191959. The next prime is 5640192013. The reversal of 5640191969 is 9691910465.

5640191969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4155091600 + 1485100369 = 64460^2 + 38537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5640191969 is a prime.

It is a super-2 number, since 2×5640191969² = 63623530894344193922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5640191929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820095984 + 2820095985.

It is an arithmetic number, because the mean of its divisors is an integer number (2820095985).

Almost surely, 2^5640191969 is an apocalyptic number.

It is an amenable number.

5640191969 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640191969 is an equidigital number, since it uses as much as digits as its factorization.

5640191969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 5640191969 is about 75101.2115015464. The cubic root of 5640191969 is about 1780.0462859866.

The spelling of 5640191969 in words is "five billion, six hundred forty million, one hundred ninety-one thousand, nine hundred sixty-nine".