516943838 has 4 divisors (see below), whose sum is σ = 775415760. Its totient is φ = 258471918.

The previous prime is 516943759. The next prime is 516943841. The reversal of 516943838 is 838349615.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 516943792 and 516943801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129235958 + ... + 129235961.

It is an arithmetic number, because the mean of its divisors is an integer number (193853940).

Almost surely, 2^516943838 is an apocalyptic number.

516943838 is a deficient number, since it is larger than the sum of its proper divisors (258471922).

516943838 is a wasteful number, since it uses less digits than its factorization.

516943838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258471921.

The product of its digits is 622080, while the sum is 47.

The square root of 516943838 is about 22736.3989672947. The cubic root of 516943838 is about 802.5666720615.

The spelling of 516943838 in words is "five hundred sixteen million, nine hundred forty-three thousand, eight hundred thirty-eight".