881985986 has 24 divisors (see below), whose sum is σ = 1574773200. Its totient is φ = 369201672.

The previous prime is 881985967. The next prime is 881985989. The reversal of 881985986 is 689589188.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (881985989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100436 + ... + 108863.

It is an arithmetic number, because the mean of its divisors is an integer number (65615550).

Almost surely, 2^881985986 is an apocalyptic number.

881985986 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

881985986 is a deficient number, since it is larger than the sum of its proper divisors (692787214).

881985986 is a wasteful number, since it uses less digits than its factorization.

881985986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209358 (or 209351 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 62.

The square root of 881985986 is about 29698.2488709351. The cubic root of 881985986 is about 959.0043156074.

The spelling of 881985986 in words is "eight hundred eighty-one million, nine hundred eighty-five thousand, nine hundred eighty-six".