19418449463 has 6 divisors (see below), whose sum is σ = 22588808616. Its totient is φ = 16644385212.

The previous prime is 19418449451. The next prime is 19418449469. The reversal of 19418449463 is 36494481491.

It is not a de Polignac number, because 19418449463 - 2⁴ = 19418449447 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 (19418449469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198147395 + ... + 198147492.

It is an arithmetic number, because the mean of its divisors is an integer number (3764801436).

Almost surely, 2^19418449463 is an apocalyptic number.

19418449463 is a deficient number, since it is larger than the sum of its proper divisors (3170359153).

19418449463 is an equidigital number, since it uses as much as digits as its factorization.

19418449463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396294901 (or 396294894 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 53.

The spelling of 19418449463 in words is "nineteen billion, four hundred eighteen million, four hundred forty-nine thousand, four hundred sixty-three".