18912460005 has 24 divisors (see below), whose sum is σ = 33839070720. Its totient is φ = 9761268960.

The previous prime is 18912459977. The next prime is 18912460009. The reversal of 18912460005 is 50006421981.

18912460005 is a `hidden beast` number, since 189 + 12 + 460 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 18912460005 - 2⁷ = 18912459877 is a prime.

It is a super-2 number, since 2×18912460005² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18912460009) 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, 6777265 + ... + 6780054.

It is an arithmetic number, because the mean of its divisors is an integer number (1409961280).

Almost surely, 2^18912460005 is an apocalyptic number.

18912460005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18912460005 is a deficient number, since it is larger than the sum of its proper divisors (14926610715).

18912460005 is a wasteful number, since it uses less digits than its factorization.

18912460005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13557361 (or 13557358 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

Adding to 18912460005 its reverse (50006421981), we get a palindrome (68918881986).

The spelling of 18912460005 in words is "eighteen billion, nine hundred twelve million, four hundred sixty thousand, five".