1996206659 has 4 divisors (see below), whose sum is σ = 2014862904. Its totient is φ = 1977550416.

The previous prime is 1996206629. The next prime is 1996206727. The reversal of 1996206659 is 9566026991.

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

It is a cyclic number.

It is not a de Polignac number, because 1996206659 - 2⁸ = 1996206403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1996206659.

It is not an unprimeable number, because it can be changed into a prime (1996206629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9327962 + ... + 9328175.

It is an arithmetic number, because the mean of its divisors is an integer number (503715726).

Almost surely, 2^1996206659 is an apocalyptic number.

1996206659 is a deficient number, since it is larger than the sum of its proper divisors (18656245).

1996206659 is a wasteful number, since it uses less digits than its factorization.

1996206659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18656244.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The square root of 1996206659 is about 44678.9285793650. The cubic root of 1996206659 is about 1259.1239940690.

The spelling of 1996206659 in words is "one billion, nine hundred ninety-six million, two hundred six thousand, six hundred fifty-nine".