531949133873 has 2 divisors, whose sum is σ = 531949133874. Its totient is φ = 531949133872.

The previous prime is 531949133801. The next prime is 531949133917. The reversal of 531949133873 is 378331949135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281316734449 + 250632399424 = 530393^2 + 500632^2 .

It is a cyclic number.

It is not a de Polignac number, because 531949133873 - 2¹⁰ = 531949132849 is a prime.

It is not a weakly prime, because it can be changed into another prime (531949133273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265974566936 + 265974566937.

It is an arithmetic number, because the mean of its divisors is an integer number (265974566937).

Almost surely, 2^531949133873 is an apocalyptic number.

It is an amenable number.

531949133873 is a deficient number, since it is larger than the sum of its proper divisors (1).

531949133873 is an equidigital number, since it uses as much as digits as its factorization.

531949133873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 56.

The spelling of 531949133873 in words is "five hundred thirty-one billion, nine hundred forty-nine million, one hundred thirty-three thousand, eight hundred seventy-three".