19143133397 has 2 divisors, whose sum is σ = 19143133398. Its totient is φ = 19143133396.

The previous prime is 19143133391. The next prime is 19143133433. The reversal of 19143133397 is 79333134191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17989783876 + 1153349521 = 134126^2 + 33961^2 .

It is a cyclic number.

It is not a de Polignac number, because 19143133397 - 2¹⁶ = 19143067861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19143133391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9571566698 + 9571566699.

It is an arithmetic number, because the mean of its divisors is an integer number (9571566699).

Almost surely, 2^19143133397 is an apocalyptic number.

It is an amenable number.

19143133397 is a deficient number, since it is larger than the sum of its proper divisors (1).

19143133397 is an equidigital number, since it uses as much as digits as its factorization.

19143133397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 44.

The spelling of 19143133397 in words is "nineteen billion, one hundred forty-three million, one hundred thirty-three thousand, three hundred ninety-seven".