19497095424 has 81 divisors (see below), whose sum is σ = 56234263813. Its totient is φ = 6496797696.

The previous prime is 19497095419. The next prime is 19497095477. The reversal of 19497095424 is 42459079491.

The square root of 19497095424 is 139632.

It is a perfect power (a square), and thus also a powerful number.

19497095424 is a `hidden beast` number, since 1 + 9 + 4 + 97 + 0 + 9 + 542 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16908321024 + 2588774400 = 130032^2 + 50880^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6700882 + ... + 6703790.

Almost surely, 2^19497095424 is an apocalyptic number.

19497095424 is the 139632-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19497095424

19497095424 is an abundant number, since it is smaller than the sum of its proper divisors (36737168389).

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

19497095424 is an frugal number, since it uses more digits than its factorization.

19497095424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840 (or 2914 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 19497095424 in words is "nineteen billion, four hundred ninety-seven million, ninety-five thousand, four hundred twenty-four".