18049180841 has 4 divisors (see below), whose sum is σ = 18075842052. Its totient is φ = 18022519632.

The previous prime is 18049180817. The next prime is 18049180867. The reversal of 18049180841 is 14808194081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16894540441 + 1154640400 = 129979^2 + 33980^2 .

It is a cyclic number.

It is not a de Polignac number, because 18049180841 - 2¹⁴ = 18049164457 is a prime.

It is a super-2 number, since 2×18049180841² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18049180792 and 18049180801.

It is not an unprimeable number, because it can be changed into a prime (18049182841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13329590 + ... + 13330943.

It is an arithmetic number, because the mean of its divisors is an integer number (4518960513).

Almost surely, 2^18049180841 is an apocalyptic number.

It is an amenable number.

18049180841 is a deficient number, since it is larger than the sum of its proper divisors (26661211).

18049180841 is an equidigital number, since it uses as much as digits as its factorization.

18049180841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26661210.

The product of its (nonzero) digits is 73728, while the sum is 44.

The spelling of 18049180841 in words is "eighteen billion, forty-nine million, one hundred eighty thousand, eight hundred forty-one".