18518364242 has 8 divisors (see below), whose sum is σ = 31745767296. Its totient is φ = 7936441812.

The previous prime is 18518364217. The next prime is 18518364257. The reversal of 18518364242 is 24246381581.

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

It is a junction number, because it is equal to n+sod(n) for n = 18518364193 and 18518364202.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 661370138 + ... + 661370165.

It is an arithmetic number, because the mean of its divisors is an integer number (3968220912).

Almost surely, 2^18518364242 is an apocalyptic number.

18518364242 is a deficient number, since it is larger than the sum of its proper divisors (13227403054).

18518364242 is a wasteful number, since it uses less digits than its factorization.

18518364242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322740312.

The product of its digits is 368640, while the sum is 44.

The spelling of 18518364242 in words is "eighteen billion, five hundred eighteen million, three hundred sixty-four thousand, two hundred forty-two".