518243842 has 8 divisors (see below), whose sum is σ = 779418000. Its totient is φ = 258437844.

The previous prime is 518243837. The next prime is 518243851. The reversal of 518243842 is 248342815.

It is a happy number.

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

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, 341092 + ... + 342607.

It is an arithmetic number, because the mean of its divisors is an integer number (97427250).

Almost surely, 2^518243842 is an apocalyptic number.

518243842 is a deficient number, since it is larger than the sum of its proper divisors (261174158).

518243842 is a wasteful number, since it uses less digits than its factorization.

518243842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684080.

The product of its digits is 61440, while the sum is 37.

The square root of 518243842 is about 22764.9696244032. The cubic root of 518243842 is about 803.2388704929.

The spelling of 518243842 in words is "five hundred eighteen million, two hundred forty-three thousand, eight hundred forty-two".