1990983216896 has 18 divisors (see below), whose sum is σ = 3974189156112. Its totient is φ = 995491608320.

The previous prime is 1990983216857. The next prime is 1990983216913. The reversal of 1990983216896 is 6986123890991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888638840 + ... + 3888639351.

Almost surely, 2^{1990983216896} is an apocalyptic number.

1990983216896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1990983216896 is a deficient number, since it is larger than the sum of its proper divisors (1983205939216).

1990983216896 is an frugal number, since it uses more digits than its factorization.

1990983216896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7777278207 (or 7777278193 counting only the distinct ones).

The product of its (nonzero) digits is 90699264, while the sum is 71.

The spelling of 1990983216896 in words is "one trillion, nine hundred ninety billion, nine hundred eighty-three million, two hundred sixteen thousand, eight hundred ninety-six".