18764738048233 has 4 divisors (see below), whose sum is σ = 18764769832528. Its totient is φ = 18764706263940.

The previous prime is 18764738048219. The next prime is 18764738048237. The reversal of 18764738048233 is 33284083746781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18764738048233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18764738048237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14989491 + ... + 16193032.

It is an arithmetic number, because the mean of its divisors is an integer number (4691192458132).

Almost surely, 2^{18764738048233} is an apocalyptic number.

It is an amenable number.

18764738048233 is a deficient number, since it is larger than the sum of its proper divisors (31784295).

18764738048233 is an equidigital number, since it uses as much as digits as its factorization.

18764738048233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31784294.

The product of its (nonzero) digits is 130056192, while the sum is 64.

The spelling of 18764738048233 in words is "eighteen trillion, seven hundred sixty-four billion, seven hundred thirty-eight million, forty-eight thousand, two hundred thirty-three".