18454252018 has 16 divisors (see below), whose sum is σ = 29141010720. Its totient is φ = 8740672416.

The previous prime is 18454252013. The next prime is 18454252027. The reversal of 18454252018 is 81025245481.

It is not an unprimeable number, because it can be changed into a prime (18454252013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647905 + ... + 675787.

It is an arithmetic number, because the mean of its divisors is an integer number (1821313170).

Almost surely, 2^18454252018 is an apocalyptic number.

18454252018 is a deficient number, since it is larger than the sum of its proper divisors (10686758702).

18454252018 is a wasteful number, since it uses less digits than its factorization.

18454252018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45321.

The product of its (nonzero) digits is 102400, while the sum is 40.

Adding to 18454252018 its reverse (81025245481), we get a palindrome (99479497499).

The spelling of 18454252018 in words is "eighteen billion, four hundred fifty-four million, two hundred fifty-two thousand, eighteen".