109019 has 4 divisors (see below), whose sum is σ = 111720. Its totient is φ = 106320.

The previous prime is 109013. The next prime is 109037. The reversal of 109019 is 910901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910901 = 59 ⋅15439.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109019 is a prime.

It is a super-2 number, since 2×109019² = 23770284722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (109013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1289 + ... + 1370.

It is an arithmetic number, because the mean of its divisors is an integer number (27930).

2¹⁰⁹⁰¹⁹ is an apocalyptic number.

109019 is a deficient number, since it is larger than the sum of its proper divisors (2701).

109019 is an equidigital number, since it uses as much as digits as its factorization.

109019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 109019 is about 330.1802538009. The cubic root of 109019 is about 47.7713371924.

The spelling of 109019 in words is "one hundred nine thousand, nineteen".