518363641 has 4 divisors (see below), whose sum is σ = 518560384. Its totient is φ = 518166900.

The previous prime is 518363623. The next prime is 518363647. The reversal of 518363641 is 146363815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 518363641 - 2²⁵ = 484809209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 518363641.

It is not an unprimeable number, because it can be changed into a prime (518363647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94365 + ... + 99706.

It is an arithmetic number, because the mean of its divisors is an integer number (129640096).

Almost surely, 2^518363641 is an apocalyptic number.

It is an amenable number.

518363641 is a deficient number, since it is larger than the sum of its proper divisors (196743).

518363641 is a wasteful number, since it uses less digits than its factorization.

518363641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196742.

The product of its digits is 51840, while the sum is 37.

The square root of 518363641 is about 22767.6006860626. The cubic root of 518363641 is about 803.3007588627.

The spelling of 518363641 in words is "five hundred eighteen million, three hundred sixty-three thousand, six hundred forty-one".