518104491 has 8 divisors (see below), whose sum is σ = 693375120. Its totient is φ = 344118432.

The previous prime is 518104487. The next prime is 518104493. The reversal of 518104491 is 194401815.

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

It is not a de Polignac number, because 518104491 - 2² = 518104487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (518104493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320200 + ... + 321813.

It is an arithmetic number, because the mean of its divisors is an integer number (86671890).

Almost surely, 2^518104491 is an apocalyptic number.

518104491 is a deficient number, since it is larger than the sum of its proper divisors (175270629).

518104491 is a wasteful number, since it uses less digits than its factorization.

518104491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642285.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 518104491 is about 22761.9087732114. The cubic root of 518104491 is about 803.1668695255.

The spelling of 518104491 in words is "five hundred eighteen million, one hundred four thousand, four hundred ninety-one".