19267938480 has 160 divisors (see below), whose sum is σ = 68370766848. Its totient is φ = 4397184000.

The previous prime is 19267938461. The next prime is 19267938509. The reversal of 19267938480 is 8483976291.

It is a Cunningham number, because it is equal to 138809²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 19267938480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1101805 + ... + 1119155.

Almost surely, 2^19267938480 is an apocalyptic number.

19267938480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19267938480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34185383424).

19267938480 is an abundant number, since it is smaller than the sum of its proper divisors (49102828368).

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

19267938480 is a wasteful number, since it uses less digits than its factorization.

19267938480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18035 (or 18029 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 19267938480 in words is "nineteen billion, two hundred sixty-seven million, nine hundred thirty-eight thousand, four hundred eighty".