18943452269 has 8 divisors (see below), whose sum is σ = 21651149568. Its totient is φ = 16236127440.

The previous prime is 18943452251. The next prime is 18943452299. The reversal of 18943452269 is 96225434981.

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 18943452269 - 2¹⁶ = 18943386733 is a prime.

It is a super-2 number, since 2×18943452269² (a number of 21 digits) contains 22 as substring.

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 18943452269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18943452299) 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, 26039 + ... + 196379.

It is an arithmetic number, because the mean of its divisors is an integer number (2706393696).

Almost surely, 2^18943452269 is an apocalyptic number.

It is an amenable number.

18943452269 is a deficient number, since it is larger than the sum of its proper divisors (2707697299).

18943452269 is a wasteful number, since it uses less digits than its factorization.

18943452269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186235.

The product of its digits is 3732480, while the sum is 53.

The spelling of 18943452269 in words is "eighteen billion, nine hundred forty-three million, four hundred fifty-two thousand, two hundred sixty-nine".