19470518408 has 64 divisors (see below), whose sum is σ = 40176864000. Its totient is φ = 8772494400.

The previous prime is 19470518407. The next prime is 19470518411. The reversal of 19470518408 is 80481507491.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (19470518407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13344383 + ... + 13345841.

It is an arithmetic number, because the mean of its divisors is an integer number (627763500).

Almost surely, 2^19470518408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19470518408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20088432000).

19470518408 is an abundant number, since it is smaller than the sum of its proper divisors (20706345592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19470518408 is a wasteful number, since it uses less digits than its factorization.

19470518408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706 (or 2702 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 19470518408 in words is "nineteen billion, four hundred seventy million, five hundred eighteen thousand, four hundred eight".