1109890111 has 16 divisors (see below), whose sum is σ = 1287158400. Its totient is φ = 946404000.

The previous prime is 1109890097. The next prime is 1109890163. The reversal of 1109890111 is 1110989011.

It is a cyclic number.

It is not a de Polignac number, because 1109890111 - 2¹³ = 1109881919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109890511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5181 + ... + 47398.

It is an arithmetic number, because the mean of its divisors is an integer number (80447400).

Almost surely, 2^1109890111 is an apocalyptic number.

1109890111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1109890111 is a deficient number, since it is larger than the sum of its proper divisors (177268289).

1109890111 is a wasteful number, since it uses less digits than its factorization.

1109890111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52710.

The product of its (nonzero) digits is 648, while the sum is 31.

The square root of 1109890111 is about 33315.0132973109. The cubic root of 1109890111 is about 1035.3646364712.

The spelling of 1109890111 in words is "one billion, one hundred nine million, eight hundred ninety thousand, one hundred eleven".