982121808 has 20 divisors (see below), whose sum is σ = 2537148128. Its totient is φ = 327373920.

The previous prime is 982121737. The next prime is 982121839. The reversal of 982121808 is 808121289.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10230388 + ... + 10230483.

Almost surely, 2^982121808 is an apocalyptic number.

It is an amenable number.

982121808 is an abundant number, since it is smaller than the sum of its proper divisors (1555026320).

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

982121808 is a wasteful number, since it uses less digits than its factorization.

982121808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460882 (or 20460876 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 982121808 is about 31338.8226964575. The cubic root of 982121808 is about 994.0047312491.

The spelling of 982121808 in words is "nine hundred eighty-two million, one hundred twenty-one thousand, eight hundred eight".