1996637812 has 12 divisors (see below), whose sum is σ = 3762894436. Its totient is φ = 921525120.

The previous prime is 1996637809. The next prime is 1996637831. The reversal of 1996637812 is 2187366991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1224020196 + 772617616 = 34986^2 + 27796^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 38396881 = 1996637812 / (1 + 9 + 9 + 6 + 6 + 3 + 7 + 8 + 1 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 1996637812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19198389 + ... + 19198492.

Almost surely, 2^1996637812 is an apocalyptic number.

It is an amenable number.

1996637812 is a deficient number, since it is larger than the sum of its proper divisors (1766256624).

1996637812 is a wasteful number, since it uses less digits than its factorization.

1996637812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38396898 (or 38396896 counting only the distinct ones).

The product of its digits is 979776, while the sum is 52.

The square root of 1996637812 is about 44683.7533338461. The cubic root of 1996637812 is about 1259.2146386598.

The spelling of 1996637812 in words is "one billion, nine hundred ninety-six million, six hundred thirty-seven thousand, eight hundred twelve".