539493187 has 2 divisors, whose sum is σ = 539493188. Its totient is φ = 539493186.

The previous prime is 539493161. The next prime is 539493191. The reversal of 539493187 is 781394935.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-539493187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 539493187.

It is not a weakly prime, because it can be changed into another prime (539493137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269746593 + 269746594.

It is an arithmetic number, because the mean of its divisors is an integer number (269746594).

Almost surely, 2^539493187 is an apocalyptic number.

539493187 is a deficient number, since it is larger than the sum of its proper divisors (1).

539493187 is an equidigital number, since it uses as much as digits as its factorization.

539493187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 539493187 is about 23226.9926378772. The cubic root of 539493187 is about 814.0704455812.

The spelling of 539493187 in words is "five hundred thirty-nine million, four hundred ninety-three thousand, one hundred eighty-seven".