19172055223 has 8 divisors (see below), whose sum is σ = 20010228336. Its totient is φ = 18351528000.

The previous prime is 19172055193. The next prime is 19172055247. The reversal of 19172055223 is 32255027191.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19172055223 - 2⁹ = 19172054711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19172055263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4409253 + ... + 4413598.

It is an arithmetic number, because the mean of its divisors is an integer number (2501278542).

Almost surely, 2^19172055223 is an apocalyptic number.

19172055223 is a deficient number, since it is larger than the sum of its proper divisors (838173113).

19172055223 is an equidigital number, since it uses as much as digits as its factorization.

19172055223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822945.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 19172055223 in words is "nineteen billion, one hundred seventy-two million, fifty-five thousand, two hundred twenty-three".