18014175981 has 16 divisors (see below), whose sum is σ = 27548561920. Its totient is φ = 11622048480.

The previous prime is 18014175901. The next prime is 18014175997. The reversal of 18014175981 is 18957141081.

18014175981 is a `hidden beast` number, since 18 + 0 + 1 + 41 + 7 + 598 + 1 = 666.

It is not a de Polignac number, because 18014175981 - 2¹⁰ = 18014174957 is a prime.

It is a super-2 number, since 2×18014175981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18014175901) 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 15 ways as a sum of consecutive naturals, for example, 10760320 + ... + 10761993.

It is an arithmetic number, because the mean of its divisors is an integer number (1721785120).

Almost surely, 2^18014175981 is an apocalyptic number.

It is an amenable number.

18014175981 is a deficient number, since it is larger than the sum of its proper divisors (9534385939).

18014175981 is a wasteful number, since it uses less digits than its factorization.

18014175981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21522353 (or 21522347 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 45.

The spelling of 18014175981 in words is "eighteen billion, fourteen million, one hundred seventy-five thousand, nine hundred eighty-one".