19438609822 has 8 divisors (see below), whose sum is σ = 29213667576. Its totient is φ = 9700720632.

The previous prime is 19438609807. The next prime is 19438609823. The reversal of 19438609822 is 22890683491.

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 19438609822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19438609823) 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, 9290833 + ... + 9292924.

It is an arithmetic number, because the mean of its divisors is an integer number (3651708447).

Almost surely, 2^19438609822 is an apocalyptic number.

19438609822 is a deficient number, since it is larger than the sum of its proper divisors (9775057754).

19438609822 is a wasteful number, since it uses less digits than its factorization.

19438609822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18584282.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 19438609822 in words is "nineteen billion, four hundred thirty-eight million, six hundred nine thousand, eight hundred twenty-two".