516230018 has 4 divisors (see below), whose sum is σ = 774345030. Its totient is φ = 258115008.

The previous prime is 516229937. The next prime is 516230027. The reversal of 516230018 is 810032615.

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., 313537849 + 202692169 = 17707^2 + 14237^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129057503 + ... + 129057506.

Almost surely, 2^516230018 is an apocalyptic number.

516230018 is a deficient number, since it is larger than the sum of its proper divisors (258115012).

516230018 is a wasteful number, since it uses less digits than its factorization.

516230018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258115011.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 516230018 is about 22720.6958080073. The cubic root of 516230018 is about 802.1970948191.

The spelling of 516230018 in words is "five hundred sixteen million, two hundred thirty thousand, eighteen".