18476681481 has 24 divisors (see below), whose sum is σ = 27317370080. Its totient is φ = 12027730176.

The previous prime is 18476681467. The next prime is 18476681491. The reversal of 18476681481 is 18418667481.

18476681481 is a `hidden beast` number, since 1 + 84 + 7 + 6 + 6 + 81 + 481 = 666.

It is not a de Polignac number, because 18476681481 - 2⁹ = 18476680969 is a prime.

It is a super-2 number, since 2×18476681481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18476681401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2064825 + ... + 2073753.

Almost surely, 2^18476681481 is an apocalyptic number.

It is an amenable number.

18476681481 is a deficient number, since it is larger than the sum of its proper divisors (8840688599).

18476681481 is a wasteful number, since it uses less digits than its factorization.

18476681481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14325 (or 14322 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The spelling of 18476681481 in words is "eighteen billion, four hundred seventy-six million, six hundred eighty-one thousand, four hundred eighty-one".