516238109 has 8 divisors (see below), whose sum is σ = 520919040. Its totient is φ = 511567056.

The previous prime is 516238049. The next prime is 516238111. The reversal of 516238109 is 901832615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516238109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516238139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136952 + ... + 140670.

It is an arithmetic number, because the mean of its divisors is an integer number (65114880).

Almost surely, 2^516238109 is an apocalyptic number.

It is an amenable number.

516238109 is a deficient number, since it is larger than the sum of its proper divisors (4680931).

516238109 is a wasteful number, since it uses less digits than its factorization.

516238109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 516238109 is about 22720.8738608355. The cubic root of 516238109 is about 802.2012858079.

The spelling of 516238109 in words is "five hundred sixteen million, two hundred thirty-eight thousand, one hundred nine".