1996980221 has 16 divisors (see below), whose sum is σ = 2098483200. Its totient is φ = 1896761328.

The previous prime is 1996980211. The next prime is 1996980229. The reversal of 1996980221 is 1220896991.

It is a cyclic number.

It is not a de Polignac number, because 1996980221 - 2¹⁸ = 1996718077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996980229) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 3029990 + ... + 3030648.

It is an arithmetic number, because the mean of its divisors is an integer number (131155200).

Almost surely, 2^1996980221 is an apocalyptic number.

It is an amenable number.

1996980221 is a deficient number, since it is larger than the sum of its proper divisors (101502979).

1996980221 is a wasteful number, since it uses less digits than its factorization.

1996980221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 1996980221 is about 44687.5846404793. The cubic root of 1996980221 is about 1259.2866166249.

The spelling of 1996980221 in words is "one billion, nine hundred ninety-six million, nine hundred eighty thousand, two hundred twenty-one".