12018739 has 2 divisors, whose sum is σ = 12018740. Its totient is φ = 12018738.

The previous prime is 12018737. The next prime is 12018749. The reversal of 12018739 is 93781021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12018739 - 2¹ = 12018737 is a prime.

Together with 12018737, it forms a pair of twin primes.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12018739.

It is not a weakly prime, because it can be changed into another prime (12018733) 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, 6009369 + 6009370.

It is an arithmetic number, because the mean of its divisors is an integer number (6009370).

Almost surely, 2^12018739 is an apocalyptic number.

12018739 is a deficient number, since it is larger than the sum of its proper divisors (1).

12018739 is an equidigital number, since it uses as much as digits as its factorization.

12018739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12018739 is about 3466.8053017151. The cubic root of 12018739 is about 229.0619576447.

The spelling of 12018739 in words is "twelve million, eighteen thousand, seven hundred thirty-nine".