19472000000 has 154 divisors (see below), whose sum is σ = 48695587626. Its totient is φ = 7782400000.

The previous prime is 19471999997. The next prime is 19472000011. The reversal of 19472000000 is 27491.

It can be written as a sum of positive squares in 7 ways, for example, as 19207742464 + 264257536 = 138592^2 + 16256^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19472000000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15999392 + ... + 16000608.

Almost surely, 2^19472000000 is an apocalyptic number.

19472000000 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 19472000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24347793813).

19472000000 is an abundant number, since it is smaller than the sum of its proper divisors (29223587626).

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

19472000000 is an frugal number, since it uses more digits than its factorization.

19472000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 19472000000 its reverse (27491), we get a palindrome (19472027491).

The spelling of 19472000000 in words is "nineteen billion, four hundred seventy-two million", and thus it is an aban number.