18073747 has 2 divisors, whose sum is σ = 18073748. Its totient is φ = 18073746.

The previous prime is 18073729. The next prime is 18073763. The reversal of 18073747 is 74737081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18073747 - 2⁷ = 18073619 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18070747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9036873 + 9036874.

It is an arithmetic number, because the mean of its divisors is an integer number (9036874).

Almost surely, 2^18073747 is an apocalyptic number.

18073747 is a deficient number, since it is larger than the sum of its proper divisors (1).

18073747 is an equidigital number, since it uses as much as digits as its factorization.

18073747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 18073747 is about 4251.3229705587. The cubic root of 18073747 is about 262.4315625066.

It can be divided in two parts, 18073 and 747, that multiplied together give a palindrome (13500531).

The spelling of 18073747 in words is "eighteen million, seventy-three thousand, seven hundred forty-seven".