19168442 has 8 divisors (see below), whose sum is σ = 29529876. Its totient is φ = 9325152.

The previous prime is 19168441. The next prime is 19168459. The reversal of 19168442 is 24486191.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18757561 + 410881 = 4331^2 + 641^2 .

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 (19168441) 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 3 ways as a sum of consecutive naturals, for example, 129443 + ... + 129590.

Almost surely, 2^19168442 is an apocalyptic number.

19168442 is a deficient number, since it is larger than the sum of its proper divisors (10361434).

19168442 is a wasteful number, since it uses less digits than its factorization.

19168442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259072.

The product of its digits is 13824, while the sum is 35.

The square root of 19168442 is about 4378.1779315144. The cubic root of 19168442 is about 267.6263914901.

The spelling of 19168442 in words is "nineteen million, one hundred sixty-eight thousand, four hundred forty-two".