1089298920 has 32 divisors (see below), whose sum is σ = 3267897120. Its totient is φ = 290479680.

The previous prime is 1089298901. The next prime is 1089298967. The reversal of 1089298920 is 298929801.

It is a super-2 number, since 2×1089298920² = 2373144274226332800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1089298920.

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, 4538626 + ... + 4538865.

It is an arithmetic number, because the mean of its divisors is an integer number (102121785).

Almost surely, 2^1089298920 is an apocalyptic number.

1089298920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089298920 is an abundant number, since it is smaller than the sum of its proper divisors (2178598200).

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

1089298920 is a wasteful number, since it uses less digits than its factorization.

1089298920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9077505 (or 9077501 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 1089298920 is about 33004.5287801538. The cubic root of 1089298920 is about 1028.9217736217.

The spelling of 1089298920 in words is "one billion, eighty-nine million, two hundred ninety-eight thousand, nine hundred twenty".