18170481847 has 16 divisors (see below), whose sum is σ = 20864298240. Its totient is φ = 15501342528.

The previous prime is 18170481829. The next prime is 18170481881. The reversal of 18170481847 is 74818407181.

It is not a de Polignac number, because 18170481847 - 2¹¹ = 18170479799 is a prime.

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 18170481847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18170481817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375528 + ... + 1388674.

It is an arithmetic number, because the mean of its divisors is an integer number (1304018640).

Almost surely, 2^18170481847 is an apocalyptic number.

18170481847 is a deficient number, since it is larger than the sum of its proper divisors (2693816393).

18170481847 is a wasteful number, since it uses less digits than its factorization.

18170481847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14070.

The product of its (nonzero) digits is 401408, while the sum is 49.

The spelling of 18170481847 in words is "eighteen billion, one hundred seventy million, four hundred eighty-one thousand, eight hundred forty-seven".