19423814 has 8 divisors (see below), whose sum is σ = 30669240. Its totient is φ = 9200736.

The previous prime is 19423813. The next prime is 19423829. The reversal of 19423814 is 41832491.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19423813) 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, 255539 + ... + 255614.

It is an arithmetic number, because the mean of its divisors is an integer number (3833655).

Almost surely, 2^19423814 is an apocalyptic number.

19423814 is a deficient number, since it is larger than the sum of its proper divisors (11245426).

19423814 is a wasteful number, since it uses less digits than its factorization.

19423814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511174.

The product of its digits is 6912, while the sum is 32.

The square root of 19423814 is about 4407.2456251042. The cubic root of 19423814 is about 268.8096385403.

The spelling of 19423814 in words is "nineteen million, four hundred twenty-three thousand, eight hundred fourteen".