18742266999 has 16 divisors (see below), whose sum is σ = 27774265600. Its totient is φ = 12491269848.

The previous prime is 18742266973. The next prime is 18742267003. The reversal of 18742266999 is 99966224781.

It is a de Polignac number, because none of the positive numbers 2^k-18742266999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18742266929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1429 + ... + 193614.

It is an arithmetic number, because the mean of its divisors is an integer number (1735891600).

Almost surely, 2^18742266999 is an apocalyptic number.

18742266999 is a deficient number, since it is larger than the sum of its proper divisors (9031998601).

18742266999 is a wasteful number, since it uses less digits than its factorization.

18742266999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198611 (or 198605 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 18742266999 in words is "eighteen billion, seven hundred forty-two million, two hundred sixty-six thousand, nine hundred ninety-nine".