18241743843 has 48 divisors (see below), whose sum is σ = 27272044800. Its totient is φ = 11742494400.

The previous prime is 18241743829. The next prime is 18241743851. The reversal of 18241743843 is 34834714281.

It is a Cunningham number, because it is equal to 135062²-1.

It is not a de Polignac number, because 18241743843 - 2⁸ = 18241743587 is a prime.

It is a super-2 number, since 2×18241743843² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18241743853) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17692738 + ... + 17693768.

It is an arithmetic number, because the mean of its divisors is an integer number (568167600).

Almost surely, 2^18241743843 is an apocalyptic number.

18241743843 is a deficient number, since it is larger than the sum of its proper divisors (9030300957).

18241743843 is a wasteful number, since it uses less digits than its factorization.

18241743843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1557 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The spelling of 18241743843 in words is "eighteen billion, two hundred forty-one million, seven hundred forty-three thousand, eight hundred forty-three".