18230037480181 has 16 divisors (see below), whose sum is σ = 19314239782320. Its totient is φ = 17147153121280.

The previous prime is 18230037480163. The next prime is 18230037480191. The reversal of 18230037480181 is 18108473003281.

It can be written as a sum of positive squares in 8 ways, for example, as 2627608580100 + 15602428900081 = 1620990^2 + 3949991^2 .

It is a cyclic number.

It is not a de Polignac number, because 18230037480181 - 2²⁹ = 18229500609269 is a prime.

It is a super-2 number, since 2×18230037480181² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230037480191) 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, 694173591 + ... + 694199851.

It is an arithmetic number, because the mean of its divisors is an integer number (1207139986395).

Almost surely, 2^{18230037480181} is an apocalyptic number.

It is an amenable number.

18230037480181 is a deficient number, since it is larger than the sum of its proper divisors (1084202302139).

18230037480181 is a wasteful number, since it uses less digits than its factorization.

18230037480181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49784.

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 18230037480181 in words is "eighteen trillion, two hundred thirty billion, thirty-seven million, four hundred eighty thousand, one hundred eighty-one".