539129018 has 4 divisors (see below), whose sum is σ = 808693530. Its totient is φ = 269564508.

The previous prime is 539128987. The next prime is 539129021. The reversal of 539129018 is 810921935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 477553609 + 61575409 = 21853^2 + 7847^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134782253 + ... + 134782256.

Almost surely, 2^539129018 is an apocalyptic number.

539129018 is a deficient number, since it is larger than the sum of its proper divisors (269564512).

539129018 is a wasteful number, since it uses less digits than its factorization.

539129018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269564511.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 539129018 is about 23219.1519655650. The cubic root of 539129018 is about 813.8872329182.

The spelling of 539129018 in words is "five hundred thirty-nine million, one hundred twenty-nine thousand, eighteen".