18518724093 has 8 divisors (see below), whose sum is σ = 24693408000. Its totient is φ = 12344928128.

The previous prime is 18518724083. The next prime is 18518724113. The reversal of 18518724093 is 39042781581.

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 18518724093 - 2¹⁷ = 18518593021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18518724013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171693 + ... + 257906.

It is an arithmetic number, because the mean of its divisors is an integer number (3086676000).

Almost surely, 2^18518724093 is an apocalyptic number.

It is an amenable number.

18518724093 is a deficient number, since it is larger than the sum of its proper divisors (6174683907).

18518724093 is a wasteful number, since it uses less digits than its factorization.

18518724093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443971.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 18518724093 in words is "eighteen billion, five hundred eighteen million, seven hundred twenty-four thousand, ninety-three".