19244919 has 4 divisors (see below), whose sum is σ = 25659896. Its totient is φ = 12829944.

The previous prime is 19244899. The next prime is 19244941. The reversal of 19244919 is 91944291.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 19244919 - 2⁵ = 19244887 is a prime.

It is a super-2 number, since 2×19244919² = 740733814633122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19244959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3207484 + ... + 3207489.

It is an arithmetic number, because the mean of its divisors is an integer number (6414974).

Almost surely, 2^19244919 is an apocalyptic number.

19244919 is a deficient number, since it is larger than the sum of its proper divisors (6414977).

19244919 is an equidigital number, since it uses as much as digits as its factorization.

19244919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6414976.

The product of its digits is 23328, while the sum is 39.

The square root of 19244919 is about 4386.9031217933. The cubic root of 19244919 is about 267.9818386371.

The spelling of 19244919 in words is "nineteen million, two hundred forty-four thousand, nine hundred nineteen".