998966188 has 24 divisors (see below), whose sum is σ = 1921049424. Its totient is φ = 450758400.

The previous prime is 998966123. The next prime is 998966209. The reversal of 998966188 is 881669899.

998966188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76833 + ... + 88888.

It is an arithmetic number, because the mean of its divisors is an integer number (80043726).

Almost surely, 2^998966188 is an apocalyptic number.

It is an amenable number.

998966188 is a deficient number, since it is larger than the sum of its proper divisors (922083236).

998966188 is a wasteful number, since it uses less digits than its factorization.

998966188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165873 (or 165871 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 64.

The square root of 998966188 is about 31606.4263718630. The cubic root of 998966188 is about 999.6552771798.

The spelling of 998966188 in words is "nine hundred ninety-eight million, nine hundred sixty-six thousand, one hundred eighty-eight".