19089530 has 16 divisors (see below), whose sum is σ = 34412040. Its totient is φ = 7624512.

The previous prime is 19089529. The next prime is 19089541. The reversal of 19089530 is 3598091.

It can be written as a sum of positive squares in 4 ways, for example, as 7027801 + 12061729 = 2651^2 + 3473^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10316 + ... + 12024.

Almost surely, 2^19089530 is an apocalyptic number.

19089530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19089530 is a deficient number, since it is larger than the sum of its proper divisors (15322510).

19089530 is a wasteful number, since it uses less digits than its factorization.

19089530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 19089530 is about 4369.1566691983. The cubic root of 19089530 is about 267.2586345828.

The spelling of 19089530 in words is "nineteen million, eighty-nine thousand, five hundred thirty".