19144426 has 8 divisors (see below), whose sum is σ = 32819040. Its totient is φ = 8204748.

The previous prime is 19144421. The next prime is 19144439. The reversal of 19144426 is 62444191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19144421) 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, 683716 + ... + 683743.

It is an arithmetic number, because the mean of its divisors is an integer number (4102380).

Almost surely, 2^19144426 is an apocalyptic number.

19144426 is a deficient number, since it is larger than the sum of its proper divisors (13674614).

19144426 is a wasteful number, since it uses less digits than its factorization.

19144426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367468.

The product of its digits is 6912, while the sum is 31.

The square root of 19144426 is about 4375.4343784360. The cubic root of 19144426 is about 267.5145757336.

The spelling of 19144426 in words is "nineteen million, one hundred forty-four thousand, four hundred twenty-six".