19448197512 has 32 divisors (see below), whose sum is σ = 48624100800. Its totient is φ = 6482251584.

The previous prime is 19448197507. The next prime is 19448197537. The reversal of 19448197512 is 21579184491.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469914 + ... + 509622.

It is an arithmetic number, because the mean of its divisors is an integer number (1519503150).

Almost surely, 2^19448197512 is an apocalyptic number.

19448197512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19448197512 is an abundant number, since it is smaller than the sum of its proper divisors (29175903288).

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

19448197512 is a wasteful number, since it uses less digits than its factorization.

19448197512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60125 (or 60121 counting only the distinct ones).

The product of its digits is 725760, while the sum is 51.

The spelling of 19448197512 in words is "nineteen billion, four hundred forty-eight million, one hundred ninety-seven thousand, five hundred twelve".