18269791384 has 16 divisors (see below), whose sum is σ = 36890925120. Its totient is φ = 8432211360.

The previous prime is 18269791381. The next prime is 18269791409. The reversal of 18269791384 is 48319796281.

It is a super-3 number, since 3×18269791384³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18269791381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87835432 + ... + 87835639.

It is an arithmetic number, because the mean of its divisors is an integer number (2305682820).

Almost surely, 2^18269791384 is an apocalyptic number.

It is an amenable number.

18269791384 is an abundant number, since it is smaller than the sum of its proper divisors (18621133736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18269791384 is a wasteful number, since it uses less digits than its factorization.

18269791384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175671090 (or 175671086 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The spelling of 18269791384 in words is "eighteen billion, two hundred sixty-nine million, seven hundred ninety-one thousand, three hundred eighty-four".