518649004 has 12 divisors (see below), whose sum is σ = 955406200. Its totient is φ = 245675808.

The previous prime is 518648959. The next prime is 518649031. The reversal of 518649004 is 400946815.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3412089 + ... + 3412240.

Almost surely, 2^518649004 is an apocalyptic number.

It is an amenable number.

518649004 is a deficient number, since it is larger than the sum of its proper divisors (436757196).

518649004 is a wasteful number, since it uses less digits than its factorization.

518649004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824352 (or 6824350 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 518649004 is about 22773.8666896950. The cubic root of 518649004 is about 803.4481394816.

The spelling of 518649004 in words is "five hundred eighteen million, six hundred forty-nine thousand, four".