18033266945 has 8 divisors (see below), whose sum is σ = 21646179240. Its totient is φ = 14422440960.

The previous prime is 18033266917. The next prime is 18033266963. The reversal of 18033266945 is 54966233081.

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

It can be written as a sum of positive squares in 4 ways, for example, as 505890064 + 17527376881 = 22492^2 + 132391^2 .

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

It is not a de Polignac number, because 18033266945 - 2¹⁶ = 18033201409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18033266945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502496 + ... + 537185.

It is an arithmetic number, because the mean of its divisors is an integer number (2705772405).

Almost surely, 2^18033266945 is an apocalyptic number.

It is an amenable number.

18033266945 is a deficient number, since it is larger than the sum of its proper divisors (3612912295).

18033266945 is a wasteful number, since it uses less digits than its factorization.

18033266945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043155.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 18033266945 in words is "eighteen billion, thirty-three million, two hundred sixty-six thousand, nine hundred forty-five".