1089129911 has 4 divisors (see below), whose sum is σ = 1107589800. Its totient is φ = 1070670024.

The previous prime is 1089129907. The next prime is 1089129917. The reversal of 1089129911 is 1199219801.

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 1089129911 - 2² = 1089129907 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 (1089129917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9229856 + ... + 9229973.

It is an arithmetic number, because the mean of its divisors is an integer number (276897450).

Almost surely, 2^1089129911 is an apocalyptic number.

1089129911 is a deficient number, since it is larger than the sum of its proper divisors (18459889).

1089129911 is an equidigital number, since it uses as much as digits as its factorization.

1089129911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18459888.

The product of its (nonzero) digits is 11664, while the sum is 41.

The square root of 1089129911 is about 33001.9682897854. The cubic root of 1089129911 is about 1028.8685571197.

The spelling of 1089129911 in words is "one billion, eighty-nine million, one hundred twenty-nine thousand, nine hundred eleven".