19089 has 16 divisors (see below), whose sum is σ = 32640. Its totient is φ = 10800.

The previous prime is 19087. The next prime is 19121. The reversal of 19089 is 98091.

It is not a de Polignac number, because 19089 - 2¹ = 19087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (19081) 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, 139 + ... + 239.

It is an arithmetic number, because the mean of its divisors is an integer number (2040).

2¹⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

19089 is a deficient number, since it is larger than the sum of its proper divisors (13551).

19089 is a wasteful number, since it uses less digits than its factorization.

19089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 19089 is about 138.1629472760. The cubic root of 19089 is about 26.7256161178.

19089 divided by its sum of digits (27) gives a palindrome (707).

The spelling of 19089 in words is "nineteen thousand, eighty-nine".