18010475281 has 8 divisors (see below), whose sum is σ = 18202197600. Its totient is φ = 17819320512.

The previous prime is 18010475261. The next prime is 18010475303. The reversal of 18010475281 is 18257401081.

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 18010475281 - 2¹³ = 18010467089 is a prime.

It is a super-2 number, since 2×18010475281² (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 18010475281.

It is not an unprimeable number, because it can be changed into a prime (18010475261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77931 + ... + 205168.

It is an arithmetic number, because the mean of its divisors is an integer number (2275274700).

Almost surely, 2^18010475281 is an apocalyptic number.

It is an amenable number.

18010475281 is a deficient number, since it is larger than the sum of its proper divisors (191722319).

18010475281 is a wasteful number, since it uses less digits than its factorization.

18010475281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283775.

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 18010475281 in words is "eighteen billion, ten million, four hundred seventy-five thousand, two hundred eighty-one".