1089075943 has 4 divisors (see below), whose sum is σ = 1089235840. Its totient is φ = 1088916048.

The previous prime is 1089075937. The next prime is 1089075961. The reversal of 1089075943 is 3495709801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1089075943 - 2⁹ = 1089075431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1089075893 and 1089075902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089075343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69255 + ... + 83512.

It is an arithmetic number, because the mean of its divisors is an integer number (272308960).

Almost surely, 2^1089075943 is an apocalyptic number.

1089075943 is a deficient number, since it is larger than the sum of its proper divisors (159897).

1089075943 is an equidigital number, since it uses as much as digits as its factorization.

1089075943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159896.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1089075943 is about 33001.1506314553. The cubic root of 1089075943 is about 1028.8515628521.

The spelling of 1089075943 in words is "one billion, eighty-nine million, seventy-five thousand, nine hundred forty-three".