1089036691 has 8 divisors (see below), whose sum is σ = 1117851840. Its totient is φ = 1060566888.

The previous prime is 1089036673. The next prime is 1089036713. The reversal of 1089036691 is 1966309801.

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 1089036691 - 2¹¹ = 1089034643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089036491) 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, 79941 + ... + 92566.

It is an arithmetic number, because the mean of its divisors is an integer number (139731480).

Almost surely, 2^1089036691 is an apocalyptic number.

1089036691 is a deficient number, since it is larger than the sum of its proper divisors (28815149).

1089036691 is a wasteful number, since it uses less digits than its factorization.

1089036691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172673.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 1089036691 is about 33000.5559195599. Note that the first 3 decimals coincide. The cubic root of 1089036691 is about 1028.8392022305.

The spelling of 1089036691 in words is "one billion, eighty-nine million, thirty-six thousand, six hundred ninety-one".