1996883780 has 12 divisors (see below), whose sum is σ = 4193455980. Its totient is φ = 798753504.

The previous prime is 1996883761. The next prime is 1996883797. The reversal of 1996883780 is 873886991.

It can be written as a sum of positive squares in 2 ways, for example, as 1132053316 + 864830464 = 33646^2 + 29408^2 .

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49922075 + ... + 49922114.

It is an arithmetic number, because the mean of its divisors is an integer number (349454665).

Almost surely, 2^1996883780 is an apocalyptic number.

1996883780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1996883780 is an abundant number, since it is smaller than the sum of its proper divisors (2196572200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1996883780 is a wasteful number, since it uses less digits than its factorization.

1996883780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99844198 (or 99844196 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 59.

The square root of 1996883780 is about 44686.5055693551. The cubic root of 1996883780 is about 1259.2663445470.

The spelling of 1996883780 in words is "one billion, nine hundred ninety-six million, eight hundred eighty-three thousand, seven hundred eighty".