1089598136 has 64 divisors (see below), whose sum is σ = 2462503680. Its totient is φ = 445857280.

The previous prime is 1089598123. The next prime is 1089598177. The reversal of 1089598136 is 6318959801.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18575 + ... + 50241.

It is an arithmetic number, because the mean of its divisors is an integer number (38476620).

Almost surely, 2^1089598136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089598136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231251840).

1089598136 is an abundant number, since it is smaller than the sum of its proper divisors (1372905544).

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

1089598136 is a wasteful number, since it uses less digits than its factorization.

1089598136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31724 (or 31720 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 1089598136 is about 33009.0614225852. The cubic root of 1089598136 is about 1029.0159753958.

The spelling of 1089598136 in words is "one billion, eighty-nine million, five hundred ninety-eight thousand, one hundred thirty-six".