18402005841 has 16 divisors (see below), whose sum is σ = 24772656384. Its totient is φ = 12149747984.

The previous prime is 18402005813. The next prime is 18402005891. The reversal of 18402005841 is 14850020481.

It is a cyclic number.

It is not a de Polignac number, because 18402005841 - 2²¹ = 18399908689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18402005891) 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, 1484230 + ... + 1496576.

It is an arithmetic number, because the mean of its divisors is an integer number (1548291024).

Almost surely, 2^18402005841 is an apocalyptic number.

It is an amenable number.

18402005841 is a deficient number, since it is larger than the sum of its proper divisors (6370650543).

18402005841 is a wasteful number, since it uses less digits than its factorization.

18402005841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17100.

The product of its (nonzero) digits is 10240, while the sum is 33.

The spelling of 18402005841 in words is "eighteen billion, four hundred two million, five thousand, eight hundred forty-one".