18280108937 has 16 divisors (see below), whose sum is σ = 18715416720. Its totient is φ = 17849548800.

The previous prime is 18280108927. The next prime is 18280108939. The reversal of 18280108937 is 73980108281.

It can be written as a sum of positive squares in 8 ways, for example, as 12131039881 + 6149069056 = 110141^2 + 78416^2 .

It is a cyclic number.

It is not a de Polignac number, because 18280108937 - 2¹⁰ = 18280107913 is a prime.

It is a super-3 number, since 3×18280108937³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18280108891 and 18280108900.

It is not an unprimeable number, because it can be changed into a prime (18280108939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8489453 + ... + 8491605.

It is an arithmetic number, because the mean of its divisors is an integer number (1169713545).

Almost surely, 2^18280108937 is an apocalyptic number.

It is an amenable number.

18280108937 is a deficient number, since it is larger than the sum of its proper divisors (435307783).

18280108937 is a wasteful number, since it uses less digits than its factorization.

18280108937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164.

The product of its (nonzero) digits is 193536, while the sum is 47.

The spelling of 18280108937 in words is "eighteen billion, two hundred eighty million, one hundred eight thousand, nine hundred thirty-seven".