1089433800 has 480 divisors, whose sum is σ = 4663243200. Its totient is φ = 229547520.

The previous prime is 1089433783. The next prime is 1089433811. The reversal of 1089433800 is 83349801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1473831 + ... + 1474569.

It is an arithmetic number, because the mean of its divisors is an integer number (9715090).

Almost surely, 2^1089433800 is an apocalyptic number.

1089433800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089433800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2331621600).

1089433800 is an abundant number, since it is smaller than the sum of its proper divisors (3573809400).

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

1089433800 is a wasteful number, since it uses less digits than its factorization.

1089433800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1089433800 is about 33006.5720728463. The cubic root of 1089433800 is about 1028.9642398473.

The spelling of 1089433800 in words is "one billion, eighty-nine million, four hundred thirty-three thousand, eight hundred".