1996565759 has 2 divisors, whose sum is σ = 1996565760. Its totient is φ = 1996565758.

The previous prime is 1996565743. The next prime is 1996565869. The reversal of 1996565759 is 9575656991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1996565759 - 2⁴ = 1996565743 is a prime.

It is a super-2 number, since 2×1996565759² = 7972549660022492162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1996565719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998282879 + 998282880.

It is an arithmetic number, because the mean of its divisors is an integer number (998282880).

Almost surely, 2^1996565759 is an apocalyptic number.

1996565759 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996565759 is an equidigital number, since it uses as much as digits as its factorization.

1996565759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22963500, while the sum is 62.

The square root of 1996565759 is about 44682.9470715619. The cubic root of 1996565759 is about 1259.1994913151.

The spelling of 1996565759 in words is "one billion, nine hundred ninety-six million, five hundred sixty-five thousand, seven hundred fifty-nine".