19274020297 has 10 divisors (see below), whose sum is σ = 22485021898. Its totient is φ = 16520586768.

The previous prime is 19274020273. The next prime is 19274020303. The reversal of 19274020297 is 79202047291.

It can be written as a sum of positive squares in only one way, i.e., 13158154681 + 6115865616 = 114709^2 + 78204^2 .

It is not a de Polignac number, because 19274020297 - 2¹¹ = 19274018249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19274026297) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4011348 + ... + 4016149.

Almost surely, 2^19274020297 is an apocalyptic number.

It is an amenable number.

19274020297 is a deficient number, since it is larger than the sum of its proper divisors (3211001601).

19274020297 is an frugal number, since it uses more digits than its factorization.

19274020297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8027525 (or 8027504 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 19274020297 in words is "nineteen billion, two hundred seventy-four million, twenty thousand, two hundred ninety-seven".