1089180693 has 12 divisors (see below), whose sum is σ = 1576176108. Its totient is φ = 724775040.

The previous prime is 1089180661. The next prime is 1089180721. The reversal of 1089180693 is 3960819801.

It can be written as a sum of positive squares in 2 ways, for example, as 500730129 + 588450564 = 22377^2 + 24258^2 .

It is not a de Polignac number, because 1089180693 - 2⁵ = 1089180661 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089180623) 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 11 ways as a sum of consecutive naturals, for example, 106980 + ... + 116717.

It is an arithmetic number, because the mean of its divisors is an integer number (131348009).

Almost surely, 2^1089180693 is an apocalyptic number.

It is an amenable number.

1089180693 is a deficient number, since it is larger than the sum of its proper divisors (486995415).

1089180693 is a wasteful number, since it uses less digits than its factorization.

1089180693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224244 (or 224241 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 1089180693 is about 33002.7376591700. The cubic root of 1089180693 is about 1028.8845476183.

The spelling of 1089180693 in words is "one billion, eighty-nine million, one hundred eighty thousand, six hundred ninety-three".