1996860088609 has 3 divisors (see below), whose sum is σ = 1996861501713. Its totient is φ = 1996858675506.

The previous prime is 1996860088603. The next prime is 1996860088621. The reversal of 1996860088609 is 9068800686991.

The square root of 1996860088609 is 1413103.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1996860088609 - 2³¹ = 1994712604961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1996860088603) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 706552 + ... + 2119654.

It is an arithmetic number, because the mean of its divisors is an integer number (665620500571).

Almost surely, 2^{1996860088609} is an apocalyptic number.

1996860088609 is the 1413103-rd square number.

1996860088609 is the 706552-nd centered octagonal number.

It is an amenable number.

1996860088609 is a deficient number, since it is larger than the sum of its proper divisors (1413104).

1996860088609 is an frugal number, since it uses more digits than its factorization.

1996860088609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826206 (or 1413103 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 70.

The spelling of 1996860088609 in words is "one trillion, nine hundred ninety-six billion, eight hundred sixty million, eighty-eight thousand, six hundred nine".