18418450689009 has 48 divisors (see below), whose sum is σ = 30543108960000. Its totient is φ = 10477144050048.

The previous prime is 18418450689007. The next prime is 18418450689031. The reversal of 18418450689009 is 90098605481481.

18418450689009 is a `hidden beast` number, since 1 + 8 + 41 + 8 + 4 + 506 + 89 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 18418450689009 - 2¹ = 18418450689007 is a prime.

It is a super-2 number, since 2×18418450689009² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (18418450689007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12470967 + ... + 13869459.

It is an arithmetic number, because the mean of its divisors is an integer number (636314770000).

Almost surely, 2^{18418450689009} is an apocalyptic number.

It is an amenable number.

18418450689009 is a deficient number, since it is larger than the sum of its proper divisors (12124658270991).

18418450689009 is a wasteful number, since it uses less digits than its factorization.

18418450689009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399454 (or 1399451 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 63.

The spelling of 18418450689009 in words is "eighteen trillion, four hundred eighteen billion, four hundred fifty million, six hundred eighty-nine thousand, nine".