1069821998 has 12 divisors (see below), whose sum is σ = 1866730392. Its totient is φ = 458495100.

The previous prime is 1069821953. The next prime is 1069822001. The reversal of 1069821998 is 8991289601.

1069821998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1069821998² = 2289038214809424008, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5458178 + ... + 5458373.

It is an arithmetic number, because the mean of its divisors is an integer number (155560866).

Almost surely, 2^1069821998 is an apocalyptic number.

1069821998 is a deficient number, since it is larger than the sum of its proper divisors (796908394).

1069821998 is a wasteful number, since it uses less digits than its factorization.

1069821998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10916567 (or 10916560 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 53.

The square root of 1069821998 is about 32708.1335144640. The cubic root of 1069821998 is about 1022.7524014687.

The spelling of 1069821998 in words is "one billion, sixty-nine million, eight hundred twenty-one thousand, nine hundred ninety-eight".