518662490 has 8 divisors (see below), whose sum is σ = 933592500. Its totient is φ = 207464992.

The previous prime is 518662483. The next prime is 518662493. The reversal of 518662490 is 94266815.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 514972249 + 3690241 = 22693^2 + 1921^2 .

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

It is not an unprimeable number, because it can be changed into a prime (518662493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25933115 + ... + 25933134.

Almost surely, 2^518662490 is an apocalyptic number.

518662490 is a deficient number, since it is larger than the sum of its proper divisors (414930010).

518662490 is a wasteful number, since it uses less digits than its factorization.

518662490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51866256.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 518662490 is about 22774.1627727563. The cubic root of 518662490 is about 803.4551032198.

It can be divided in two parts, 5186 and 62490, that added together give a palindrome (67676).

The spelling of 518662490 in words is "five hundred eighteen million, six hundred sixty-two thousand, four hundred ninety".