18294047 has 2 divisors, whose sum is σ = 18294048. Its totient is φ = 18294046.

The previous prime is 18294037. The next prime is 18294053. The reversal of 18294047 is 74049281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18294047 - 2¹⁸ = 18031903 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18293998 and 18294016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18294037) 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 as a sum of consecutive naturals, namely, 9147023 + 9147024.

It is an arithmetic number, because the mean of its divisors is an integer number (9147024).

Almost surely, 2^18294047 is an apocalyptic number.

18294047 is a deficient number, since it is larger than the sum of its proper divisors (1).

18294047 is an equidigital number, since it uses as much as digits as its factorization.

18294047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 18294047 is about 4277.1540771873. The cubic root of 18294047 is about 263.4935145015.

The spelling of 18294047 in words is "eighteen million, two hundred ninety-four thousand, forty-seven".