518993465 has 8 divisors (see below), whose sum is σ = 624073920. Its totient is φ = 414340272.

The previous prime is 518993407. The next prime is 518993477. The reversal of 518993465 is 564399815.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 518993465 - 2²⁴ = 502216249 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 104135 + ... + 109004.

It is an arithmetic number, because the mean of its divisors is an integer number (78009240).

Almost surely, 2^518993465 is an apocalyptic number.

It is an amenable number.

518993465 is a deficient number, since it is larger than the sum of its proper divisors (105080455).

518993465 is a wasteful number, since it uses less digits than its factorization.

518993465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213631.

The product of its digits is 1166400, while the sum is 50.

The square root of 518993465 is about 22781.4280720064. The cubic root of 518993465 is about 803.6259702822.

The spelling of 518993465 in words is "five hundred eighteen million, nine hundred ninety-three thousand, four hundred sixty-five".