1997916882 has 32 divisors (see below), whose sum is σ = 4376151360. Its totient is φ = 604322880.

The previous prime is 1997916881. The next prime is 1997916901. The reversal of 1997916882 is 2886197991.

It is not an unprimeable number, because it can be changed into a prime (1997916881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212469 + ... + 221672.

It is an arithmetic number, because the mean of its divisors is an integer number (136754730).

Almost surely, 2^1997916882 is an apocalyptic number.

1997916882 is an abundant number, since it is smaller than the sum of its proper divisors (2378234478).

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

1997916882 is a wasteful number, since it uses less digits than its factorization.

1997916882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434218.

The product of its digits is 3919104, while the sum is 60.

The square root of 1997916882 is about 44698.0635151010. The cubic root of 1997916882 is about 1259.4834705685.

The spelling of 1997916882 in words is "one billion, nine hundred ninety-seven million, nine hundred sixteen thousand, eight hundred eighty-two".