18474307 has 2 divisors, whose sum is σ = 18474308. Its totient is φ = 18474306.

The previous prime is 18474293. The next prime is 18474311. The reversal of 18474307 is 70347481.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18474307 is a prime.

It is not a weakly prime, because it can be changed into another prime (18474367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9237153 + 9237154.

It is an arithmetic number, because the mean of its divisors is an integer number (9237154).

Almost surely, 2^18474307 is an apocalyptic number.

18474307 is a deficient number, since it is larger than the sum of its proper divisors (1).

18474307 is an equidigital number, since it uses as much as digits as its factorization.

18474307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 18474307 is about 4298.1748452105. The cubic root of 18474307 is about 264.3561299865.

It can be divided in two parts, 18474 and 307, that added together give a palindrome (18781).

The spelling of 18474307 in words is "eighteen million, four hundred seventy-four thousand, three hundred seven".