18013751969 has 8 divisors (see below), whose sum is σ = 18643806720. Its totient is φ = 17384290000.

The previous prime is 18013751881. The next prime is 18013751981. The reversal of 18013751969 is 96915731081.

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 18013751969 - 2⁸ = 18013751713 is a prime.

It is a super-2 number, since 2×18013751969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18013751669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85907 + ... + 208344.

It is an arithmetic number, because the mean of its divisors is an integer number (2330475840).

Almost surely, 2^18013751969 is an apocalyptic number.

It is an amenable number.

18013751969 is a deficient number, since it is larger than the sum of its proper divisors (630054751).

18013751969 is a wasteful number, since it uses less digits than its factorization.

18013751969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296391.

The product of its (nonzero) digits is 408240, while the sum is 50.

The spelling of 18013751969 in words is "eighteen billion, thirteen million, seven hundred fifty-one thousand, nine hundred sixty-nine".