18198545041 has 8 divisors (see below), whose sum is σ = 18308565800. Its totient is φ = 18088790400.

The previous prime is 18198544921. The next prime is 18198545063. The reversal of 18198545041 is 14054589181.

It can be written as a sum of positive squares in 4 ways, for example, as 6789100816 + 11409444225 = 82396^2 + 106815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18198545041 - 2¹³ = 18198536849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18198544982 and 18198545000.

It is not an unprimeable number, because it can be changed into a prime (18198545641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71515 + ... + 203743.

It is an arithmetic number, because the mean of its divisors is an integer number (2288570725).

Almost surely, 2^18198545041 is an apocalyptic number.

It is an amenable number.

18198545041 is a deficient number, since it is larger than the sum of its proper divisors (110020759).

18198545041 is a wasteful number, since it uses less digits than its factorization.

18198545041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133059.

The product of its (nonzero) digits is 230400, while the sum is 46.

The spelling of 18198545041 in words is "eighteen billion, one hundred ninety-eight million, five hundred forty-five thousand, forty-one".