1089857111 has 16 divisors (see below), whose sum is σ = 1298239488. Its totient is φ = 895233600.

The previous prime is 1089857099. The next prime is 1089857117. The reversal of 1089857111 is 1117589801.

It is a cyclic number.

It is not a de Polignac number, because 1089857111 - 2¹⁴ = 1089840727 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089857117) 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 15 ways as a sum of consecutive naturals, for example, 2030 + ... + 46731.

It is an arithmetic number, because the mean of its divisors is an integer number (81139968).

Almost surely, 2^1089857111 is an apocalyptic number.

1089857111 is a deficient number, since it is larger than the sum of its proper divisors (208382377).

1089857111 is a wasteful number, since it uses less digits than its factorization.

1089857111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48902.

The product of its (nonzero) digits is 20160, while the sum is 41.

The square root of 1089857111 is about 33012.9839760056. The cubic root of 1089857111 is about 1029.0974942277.

The spelling of 1089857111 in words is "one billion, eighty-nine million, eight hundred fifty-seven thousand, one hundred eleven".