19485498239 has 4 divisors (see below), whose sum is σ = 19509232920. Its totient is φ = 19461763560.

The previous prime is 19485498233. The next prime is 19485498247. The reversal of 19485498239 is 93289458491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93289458491 = 29 ⋅3216877879.

It is a cyclic number.

It is not a de Polignac number, because 19485498239 - 2¹² = 19485494143 is a prime.

It is a super-2 number, since 2×19485498239² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19485498233) 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, 11866109 + ... + 11867750.

It is an arithmetic number, because the mean of its divisors is an integer number (4877308230).

Almost surely, 2^19485498239 is an apocalyptic number.

19485498239 is a deficient number, since it is larger than the sum of its proper divisors (23734681).

19485498239 is an equidigital number, since it uses as much as digits as its factorization.

19485498239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23734680.

The product of its digits is 22394880, while the sum is 62.

The spelling of 19485498239 in words is "nineteen billion, four hundred eighty-five million, four hundred ninety-eight thousand, two hundred thirty-nine".