19397472000 has 576 divisors, whose sum is σ = 68241997824. Its totient is φ = 4877107200.

The previous prime is 19397471999. The next prime is 19397472041. The reversal of 19397472000 is 27479391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 152735937 + ... + 152736063.

Almost surely, 2^19397472000 is an apocalyptic number.

19397472000 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 19397472000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34120998912).

19397472000 is an abundant number, since it is smaller than the sum of its proper divisors (48844525824).

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

19397472000 is a wasteful number, since it uses less digits than its factorization.

19397472000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The spelling of 19397472000 in words is "nineteen billion, three hundred ninety-seven million, four hundred seventy-two thousand".