518289690 has 16 divisors (see below), whose sum is σ = 1243895328. Its totient is φ = 138210576.

The previous prime is 518289679. The next prime is 518289697. The reversal of 518289690 is 96982815.

It is a happy number.

It is a super-2 number, since 2×518289690² = 537248405520592200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (518289697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8638132 + ... + 8638191.

It is an arithmetic number, because the mean of its divisors is an integer number (77743458).

Almost surely, 2^518289690 is an apocalyptic number.

518289690 is an abundant number, since it is smaller than the sum of its proper divisors (725605638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518289690 is a wasteful number, since it uses less digits than its factorization.

518289690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17276333.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 518289690 is about 22765.9765878822. The cubic root of 518289690 is about 803.2625567752.

The spelling of 518289690 in words is "five hundred eighteen million, two hundred eighty-nine thousand, six hundred ninety".