18208849287743 has 4 divisors (see below), whose sum is σ = 18314102752008. Its totient is φ = 18103595823480.

The previous prime is 18208849287731. The next prime is 18208849287767. The reversal of 18208849287743 is 34778294880281.

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

It is a cyclic number.

It is not a de Polignac number, because 18208849287743 - 2⁸ = 18208849287487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18208849287703) 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, 52626731873 + ... + 52626732218.

It is an arithmetic number, because the mean of its divisors is an integer number (4578525688002).

Almost surely, 2^{18208849287743} is an apocalyptic number.

18208849287743 is a deficient number, since it is larger than the sum of its proper divisors (105253464265).

18208849287743 is a wasteful number, since it uses less digits than its factorization.

18208849287743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105253464264.

The product of its (nonzero) digits is 346816512, while the sum is 71.

The spelling of 18208849287743 in words is "eighteen trillion, two hundred eight billion, eight hundred forty-nine million, two hundred eighty-seven thousand, seven hundred forty-three".