18475419168 has 48 divisors (see below), whose sum is σ = 53886641760. Its totient is φ = 6158472768.

The previous prime is 18475419143. The next prime is 18475419169. The reversal of 18475419168 is 86191457481.

18475419168 is a `hidden beast` number, since 1 + 8 + 4 + 7 + 541 + 91 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×18475419168² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (18475419169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10690930 + ... + 10692657.

It is an arithmetic number, because the mean of its divisors is an integer number (1122638370).

Almost surely, 2^18475419168 is an apocalyptic number.

18475419168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18475419168 is an abundant number, since it is smaller than the sum of its proper divisors (35411222592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18475419168 is a wasteful number, since it uses less digits than its factorization.

18475419168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21383606 (or 21383592 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 18475419168 in words is "eighteen billion, four hundred seventy-five million, four hundred nineteen thousand, one hundred sixty-eight".