538947601889 has 2 divisors, whose sum is σ = 538947601890. Its totient is φ = 538947601888.

The previous prime is 538947601879. The next prime is 538947601931. The reversal of 538947601889 is 988106749835.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341514009664 + 197433592225 = 584392^2 + 444335^2 .

It is a cyclic number.

It is not a de Polignac number, because 538947601889 - 2⁴ = 538947601873 is a prime.

It is not a weakly prime, because it can be changed into another prime (538947601879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269473800944 + 269473800945.

It is an arithmetic number, because the mean of its divisors is an integer number (269473800945).

Almost surely, 2^538947601889 is an apocalyptic number.

It is an amenable number.

538947601889 is a deficient number, since it is larger than the sum of its proper divisors (1).

538947601889 is an equidigital number, since it uses as much as digits as its factorization.

538947601889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104509440, while the sum is 68.

The spelling of 538947601889 in words is "five hundred thirty-eight billion, nine hundred forty-seven million, six hundred one thousand, eight hundred eighty-nine".