539608138 has 8 divisors (see below), whose sum is σ = 812175588. Its totient is φ = 268882944.

The previous prime is 539608127. The next prime is 539608163. The reversal of 539608138 is 831806935.

It can be written as a sum of positive squares in 2 ways, for example, as 455096889 + 84511249 = 21333^2 + 9193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 539608094 and 539608103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459831 + ... + 461002.

Almost surely, 2^539608138 is an apocalyptic number.

539608138 is a deficient number, since it is larger than the sum of its proper divisors (272567450).

539608138 is a wasteful number, since it uses less digits than its factorization.

539608138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921128.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 539608138 is about 23229.4670192839. The cubic root of 539608138 is about 814.1282600687.

The spelling of 539608138 in words is "five hundred thirty-nine million, six hundred eight thousand, one hundred thirty-eight".