538509659 has 2 divisors, whose sum is σ = 538509660. Its totient is φ = 538509658.

The previous prime is 538509641. The next prime is 538509661. The reversal of 538509659 is 956905835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538509659 - 2²⁴ = 521732443 is a prime.

It is a Sophie Germain prime.

Together with 538509661, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (537509659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269254829 + 269254830.

It is an arithmetic number, because the mean of its divisors is an integer number (269254830).

Almost surely, 2^538509659 is an apocalyptic number.

538509659 is a deficient number, since it is larger than the sum of its proper divisors (1).

538509659 is an equidigital number, since it uses as much as digits as its factorization.

538509659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458000, while the sum is 50.

The square root of 538509659 is about 23205.8108886546. The cubic root of 538509659 is about 813.5754451248.

The spelling of 538509659 in words is "five hundred thirty-eight million, five hundred nine thousand, six hundred fifty-nine".