19424392873 has 4 divisors (see below), whose sum is σ = 20446729360. Its totient is φ = 18402056388.

The previous prime is 19424392859. The next prime is 19424392877. The reversal of 19424392873 is 37829342491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19424392873 - 2³³ = 10834458281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19424392873.

It is not an unprimeable number, because it can be changed into a prime (19424392877) 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, 511168215 + ... + 511168252.

It is an arithmetic number, because the mean of its divisors is an integer number (5111682340).

Almost surely, 2^19424392873 is an apocalyptic number.

It is an amenable number.

19424392873 is a deficient number, since it is larger than the sum of its proper divisors (1022336487).

19424392873 is a wasteful number, since it uses less digits than its factorization.

19424392873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022336486.

The product of its digits is 2612736, while the sum is 52.

The spelling of 19424392873 in words is "nineteen billion, four hundred twenty-four million, three hundred ninety-two thousand, eight hundred seventy-three".