18866850023 has 8 divisors (see below), whose sum is σ = 21571320192. Its totient is φ = 16164681336.

The previous prime is 18866850017. The next prime is 18866850043. The reversal of 18866850023 is 32005866881.

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

It is a cyclic number.

It is not a de Polignac number, because 18866850023 - 2⁶ = 18866849959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18866850023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18866850043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557765 + ... + 590622.

It is an arithmetic number, because the mean of its divisors is an integer number (2696415024).

Almost surely, 2^18866850023 is an apocalyptic number.

18866850023 is a deficient number, since it is larger than the sum of its proper divisors (2704470169).

18866850023 is a wasteful number, since it uses less digits than its factorization.

18866850023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150741.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 18866850023 in words is "eighteen billion, eight hundred sixty-six million, eight hundred fifty thousand, twenty-three".