1996819963 has 4 divisors (see below), whose sum is σ = 2000790288. Its totient is φ = 1992849640.

The previous prime is 1996819921. The next prime is 1996820009. The reversal of 1996819963 is 3699186991.

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 1996819963 - 2¹³ = 1996811771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1996819163) 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, 1984408 + ... + 1985413.

It is an arithmetic number, because the mean of its divisors is an integer number (500197572).

Almost surely, 2^1996819963 is an apocalyptic number.

1996819963 is a deficient number, since it is larger than the sum of its proper divisors (3970325).

1996819963 is an equidigital number, since it uses as much as digits as its factorization.

1996819963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970324.

The product of its digits is 5668704, while the sum is 61.

The square root of 1996819963 is about 44685.7915113966. The cubic root of 1996819963 is about 1259.2529297359.

The spelling of 1996819963 in words is "one billion, nine hundred ninety-six million, eight hundred nineteen thousand, nine hundred sixty-three".