18033266943 has 24 divisors (see below), whose sum is σ = 26730832128. Its totient is φ = 11708664912.

The previous prime is 18033266917. The next prime is 18033266963. The reversal of 18033266943 is 34966233081.

It is a Cunningham number, because it is equal to 134288²-1.

It is not a de Polignac number, because 18033266943 - 2¹⁰ = 18033265919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18033266903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67146 + ... + 201432.

It is an arithmetic number, because the mean of its divisors is an integer number (1113784672).

Almost surely, 2^18033266943 is an apocalyptic number.

18033266943 is a deficient number, since it is larger than the sum of its proper divisors (8697565185).

18033266943 is a wasteful number, since it uses less digits than its factorization.

18033266943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134683 (or 134680 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 18033266943 in words is "eighteen billion, thirty-three million, two hundred sixty-six thousand, nine hundred forty-three".