531949133917 has 2 divisors, whose sum is σ = 531949133918. Its totient is φ = 531949133916.

The previous prime is 531949133873. The next prime is 531949133951. The reversal of 531949133917 is 719331949135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333014401476 + 198934732441 = 577074^2 + 446021^2 .

It is a cyclic number.

It is not a de Polignac number, because 531949133917 - 2³⁵ = 497589395549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531949133957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265974566958 + 265974566959.

It is an arithmetic number, because the mean of its divisors is an integer number (265974566959).

Almost surely, 2^531949133917 is an apocalyptic number.

It is an amenable number.

531949133917 is a deficient number, since it is larger than the sum of its proper divisors (1).

531949133917 is an equidigital number, since it uses as much as digits as its factorization.

531949133917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2755620, while the sum is 55.

The spelling of 531949133917 in words is "five hundred thirty-one billion, nine hundred forty-nine million, one hundred thirty-three thousand, nine hundred seventeen".