18458285481 has 16 divisors (see below), whose sum is σ = 27394201920. Its totient is φ = 12283656480.

The previous prime is 18458285441. The next prime is 18458285561.

18458285481 is a `hidden beast` number, since 1 + 8 + 4 + 5 + 82 + 85 + 481 = 666.

18458285481 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 18458285481 - 2⁹ = 18458284969 is a prime.

It is a super-2 number, since 2×18458285481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18458285411) 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, 591940 + ... + 622341.

It is an arithmetic number, because the mean of its divisors is an integer number (1712137620).

Almost surely, 2^18458285481 is an apocalyptic number.

It is an amenable number.

18458285481 is a deficient number, since it is larger than the sum of its proper divisors (8935916439).

18458285481 is a wasteful number, since it uses less digits than its factorization.

18458285481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214853 (or 1214847 counting only the distinct ones).

The product of its digits is 3276800, while the sum is 54.

The spelling of 18458285481 in words is "eighteen billion, four hundred fifty-eight million, two hundred eighty-five thousand, four hundred eighty-one".