19418883959 has 4 divisors (see below), whose sum is σ = 19419234816. Its totient is φ = 19418533104.

The previous prime is 19418883949. The next prime is 19418883971. The reversal of 19418883959 is 95938881491.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19418883959 - 2⁴ = 19418883943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19418883895 and 19418883904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19418883929) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 72134 + ... + 209859.

It is an arithmetic number, because the mean of its divisors is an integer number (4854808704).

Almost surely, 2^19418883959 is an apocalyptic number.

19418883959 is a deficient number, since it is larger than the sum of its proper divisors (350857).

19418883959 is an equidigital number, since it uses as much as digits as its factorization.

19418883959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350856.

The product of its digits is 22394880, while the sum is 65.

The spelling of 19418883959 in words is "nineteen billion, four hundred eighteen million, eight hundred eighty-three thousand, nine hundred fifty-nine".