18452230993 has 16 divisors (see below), whose sum is σ = 21585484800. Its totient is φ = 15443514576.

The previous prime is 18452230991. The next prime is 18452231023. The reversal of 18452230993 is 39903225481.

It is not a de Polignac number, because 18452230993 - 2¹ = 18452230991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18452230991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198458 + ... + 1213756.

It is an arithmetic number, because the mean of its divisors is an integer number (1349092800).

Almost surely, 2^18452230993 is an apocalyptic number.

It is an amenable number.

18452230993 is a deficient number, since it is larger than the sum of its proper divisors (3133253807).

18452230993 is a wasteful number, since it uses less digits than its factorization.

18452230993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19356.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 18452230993 in words is "eighteen billion, four hundred fifty-two million, two hundred thirty thousand, nine hundred ninety-three".