1108919 has 16 divisors (see below), whose sum is σ = 1339200. Its totient is φ = 917280.

The previous prime is 1108909. The next prime is 1108957. The reversal of 1108919 is 9198011.

It is not a de Polignac number, because 1108919 - 2⁴ = 1108903 is a prime.

It is a super-2 number, since 2×1108919² = 2459402697122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1108891 and 1108900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1108909) 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 15 ways as a sum of consecutive naturals, for example, 18149 + ... + 18209.

It is an arithmetic number, because the mean of its divisors is an integer number (83700).

2^1108919 is an apocalyptic number.

1108919 is a deficient number, since it is larger than the sum of its proper divisors (230281).

1108919 is an frugal number, since it uses more digits than its factorization.

1108919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 1108919 is about 1053.0522304235. The cubic root of 1108919 is about 103.5062580329.

The spelling of 1108919 in words is "one million, one hundred eight thousand, nine hundred nineteen".