18113047 has 2 divisors, whose sum is σ = 18113048. Its totient is φ = 18113046.

The previous prime is 18113033. The next prime is 18113071. The reversal of 18113047 is 74031181.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18113047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18113027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9056523 + 9056524.

It is an arithmetic number, because the mean of its divisors is an integer number (9056524).

Almost surely, 2^18113047 is an apocalyptic number.

18113047 is a deficient number, since it is larger than the sum of its proper divisors (1).

18113047 is an equidigital number, since it uses as much as digits as its factorization.

18113047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 18113047 is about 4255.9425513040. The cubic root of 18113047 is about 262.6216373533.

The spelling of 18113047 in words is "eighteen million, one hundred thirteen thousand, forty-seven".