518427361 has 3 divisors (see below), whose sum is σ = 518450131. Its totient is φ = 518404592.

The previous prime is 518427347. The next prime is 518427409. The reversal of 518427361 is 163724815.

The square root of 518427361 is 22769.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 7667361 + 510760000 = 2769^2 + 22600^2 .

It is not a de Polignac number, because 518427361 - 2²⁷ = 384209633 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 518427361.

It is not an unprimeable number, because it can be changed into a prime (518427661) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11385 + ... + 34153.

Almost surely, 2^518427361 is an apocalyptic number.

518427361 is the 22769-th square number.

518427361 is the 11385-th centered octagonal number.

It is an amenable number.

518427361 is a deficient number, since it is larger than the sum of its proper divisors (22770).

518427361 is an frugal number, since it uses more digits than its factorization.

518427361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45538 (or 22769 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The cubic root of 518427361 is about 803.3336728399. Note that the first 3 decimals are identical.

The spelling of 518427361 in words is "five hundred eighteen million, four hundred twenty-seven thousand, three hundred sixty-one".