1996031789 has 4 divisors (see below), whose sum is σ = 1996437024. Its totient is φ = 1995626556.

The previous prime is 1996031783. The next prime is 1996031797. The reversal of 1996031789 is 9871306991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1996031789 - 2²⁰ = 1994983213 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 1996031789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996031783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195137 + ... + 205110.

It is an arithmetic number, because the mean of its divisors is an integer number (499109256).

Almost surely, 2^1996031789 is an apocalyptic number.

It is an amenable number.

1996031789 is a deficient number, since it is larger than the sum of its proper divisors (405235).

1996031789 is an equidigital number, since it uses as much as digits as its factorization.

1996031789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405234.

The product of its (nonzero) digits is 734832, while the sum is 53.

The square root of 1996031789 is about 44676.9715737314. The cubic root of 1996031789 is about 1259.0872260918.

The spelling of 1996031789 in words is "one billion, nine hundred ninety-six million, thirty-one thousand, seven hundred eighty-nine".