1081436189 has 8 divisors (see below), whose sum is σ = 1099488600. Its totient is φ = 1063528000.

The previous prime is 1081436183. The next prime is 1081436201. The reversal of 1081436189 is 9816341801.

It can be written as a sum of positive squares in 4 ways, for example, as 10510564 + 1070925625 = 3242^2 + 32725^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081436189 - 2⁴ = 1081436173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081436183) 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, 20882 + ... + 50979.

It is an arithmetic number, because the mean of its divisors is an integer number (137436075).

Almost surely, 2^1081436189 is an apocalyptic number.

It is an amenable number.

1081436189 is a deficient number, since it is larger than the sum of its proper divisors (18052411).

1081436189 is a wasteful number, since it uses less digits than its factorization.

1081436189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72111.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 1081436189 is about 32885.1971105542. The cubic root of 1081436189 is about 1026.4401533484.

The spelling of 1081436189 in words is "one billion, eighty-one million, four hundred thirty-six thousand, one hundred eighty-nine".