18160047 has 6 divisors (see below), whose sum is σ = 26231192. Its totient is φ = 12106692.

The previous prime is 18160031. The next prime is 18160057. The reversal of 18160047 is 74006181.

It is a happy number.

18160047 is a `hidden beast` number, since 18 + 1 + 600 + 47 = 666.

It is not a de Polignac number, because 18160047 - 2⁴ = 18160031 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 18160047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18160027) 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 5 ways as a sum of consecutive naturals, for example, 1008883 + ... + 1008900.

Almost surely, 2^18160047 is an apocalyptic number.

18160047 is a deficient number, since it is larger than the sum of its proper divisors (8071145).

18160047 is a wasteful number, since it uses less digits than its factorization.

18160047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017789 (or 2017786 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18160047 is about 4261.4606650772. The cubic root of 18160047 is about 262.8485926561.

The spelling of 18160047 in words is "eighteen million, one hundred sixty thousand, forty-seven".