18734549369 has 8 divisors (see below), whose sum is σ = 18786178560. Its totient is φ = 18682989696.

The previous prime is 18734549203. The next prime is 18734549371. The reversal of 18734549369 is 96394543781.

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 18734549369 - 2²⁴ = 18717772153 is a prime.

It is a super-2 number, since 2×18734549369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18734542369) 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 7 ways as a sum of consecutive naturals, for example, 547292 + ... + 580514.

It is an arithmetic number, because the mean of its divisors is an integer number (2348272320).

Almost surely, 2^18734549369 is an apocalyptic number.

It is an amenable number.

18734549369 is a deficient number, since it is larger than the sum of its proper divisors (51629191).

18734549369 is an equidigital number, since it uses as much as digits as its factorization.

18734549369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34759.

The product of its digits is 19595520, while the sum is 59.

The spelling of 18734549369 in words is "eighteen billion, seven hundred thirty-four million, five hundred forty-nine thousand, three hundred sixty-nine".