538897798837 has 2 divisors, whose sum is σ = 538897798838. Its totient is φ = 538897798836.

The previous prime is 538897798787. The next prime is 538897798847. The reversal of 538897798837 is 738897798835.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538207107876 + 690690961 = 733626^2 + 26281^2 .

It is a cyclic number.

It is not a de Polignac number, because 538897798837 - 2³⁵ = 504538060469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538897798847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269448899418 + 269448899419.

It is an arithmetic number, because the mean of its divisors is an integer number (269448899419).

Almost surely, 2^538897798837 is an apocalyptic number.

It is an amenable number.

538897798837 is a deficient number, since it is larger than the sum of its proper divisors (1).

538897798837 is an equidigital number, since it uses as much as digits as its factorization.

538897798837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5120962560, while the sum is 82.

The spelling of 538897798837 in words is "five hundred thirty-eight billion, eight hundred ninety-seven million, seven hundred ninety-eight thousand, eight hundred thirty-seven".