19223460878 has 4 divisors (see below), whose sum is σ = 28835191320. Its totient is φ = 9611730438.

The previous prime is 19223460853. The next prime is 19223460887. The reversal of 19223460878 is 87806432291.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4805865218 + ... + 4805865221.

It is an arithmetic number, because the mean of its divisors is an integer number (7208797830).

Almost surely, 2^19223460878 is an apocalyptic number.

19223460878 is a deficient number, since it is larger than the sum of its proper divisors (9611730442).

19223460878 is an equidigital number, since it uses as much as digits as its factorization.

19223460878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9611730441.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 19223460878 in words is "nineteen billion, two hundred twenty-three million, four hundred sixty thousand, eight hundred seventy-eight".