1089803436 has 24 divisors (see below), whose sum is σ = 2543478000. Its totient is φ = 363181632.

The previous prime is 1089803431. The next prime is 1089803447. The reversal of 1089803436 is 6343089801.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1089803431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61090 + ... + 76886.

It is an arithmetic number, because the mean of its divisors is an integer number (105978250).

Almost surely, 2^1089803436 is an apocalyptic number.

It is an amenable number.

1089803436 is an abundant number, since it is smaller than the sum of its proper divisors (1453674564).

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

1089803436 is a wasteful number, since it uses less digits than its factorization.

1089803436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21553 (or 21551 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1089803436 is about 33012.1710282738. The cubic root of 1089803436 is about 1029.0805997455.

The spelling of 1089803436 in words is "one billion, eighty-nine million, eight hundred three thousand, four hundred thirty-six".