19089885 has 16 divisors (see below), whose sum is σ = 31872384. Its totient is φ = 9738432.

The previous prime is 19089883. The next prime is 19089901. The reversal of 19089885 is 58898091.

It is not a de Polignac number, because 19089885 - 2¹ = 19089883 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19089883) 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, 27322 + ... + 28011.

It is an arithmetic number, because the mean of its divisors is an integer number (1992024).

Almost surely, 2^19089885 is an apocalyptic number.

19089885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19089885 is a deficient number, since it is larger than the sum of its proper divisors (12782499).

19089885 is a wasteful number, since it uses less digits than its factorization.

19089885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55364.

The product of its (nonzero) digits is 207360, while the sum is 48.

The square root of 19089885 is about 4369.1972946984. The cubic root of 19089885 is about 267.2602912716.

The spelling of 19089885 in words is "nineteen million, eighty-nine thousand, eight hundred eighty-five".