19090 has 16 divisors (see below), whose sum is σ = 36288. Its totient is φ = 7216.

The previous prime is 19087. The next prime is 19121. The reversal of 19090 is 9091.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 271.

It is an arithmetic number, because the mean of its divisors is an integer number (2268).

2¹⁹⁰⁹⁰ is an apocalyptic number.

19090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19090 is a deficient number, since it is larger than the sum of its proper divisors (17198).

19090 is a wasteful number, since it uses less digits than its factorization.

19090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 19090 is about 138.1665661439. The cubic root of 19090 is about 26.7260827941.

Subtracting from 19090 its reverse (9091), we obtain a palindrome (9999).

The spelling of 19090 in words is "nineteen thousand, ninety".