19368842 has 8 divisors (see below), whose sum is σ = 29529732. Its totient is φ = 9525600.

The previous prime is 19368823. The next prime is 19368887. The reversal of 19368842 is 24886391.

It can be written as a sum of positive squares in 2 ways, for example, as 13756681 + 5612161 = 3709^2 + 2369^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 19368842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79259 + ... + 79502.

Almost surely, 2^19368842 is an apocalyptic number.

19368842 is a deficient number, since it is larger than the sum of its proper divisors (10160890).

19368842 is a wasteful number, since it uses less digits than its factorization.

19368842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158824.

The product of its digits is 82944, while the sum is 41.

The square root of 19368842 is about 4401.0046580298. The cubic root of 19368842 is about 268.5558098173. Note that the first 3 decimals are identical.

Subtracting from 19368842 its sum of digits (41), we obtain a square (19368801 = 4401²).

The spelling of 19368842 in words is "nineteen million, three hundred sixty-eight thousand, eight hundred forty-two".