18042653 has 2 divisors, whose sum is σ = 18042654. Its totient is φ = 18042652.

The previous prime is 18042599. The next prime is 18042667. The reversal of 18042653 is 35624081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9498724 + 8543929 = 3082^2 + 2923^2 .

It is a cyclic number.

It is not a de Polignac number, because 18042653 - 2¹² = 18038557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18042683) 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, 9021326 + 9021327.

It is an arithmetic number, because the mean of its divisors is an integer number (9021327).

Almost surely, 2^18042653 is an apocalyptic number.

It is an amenable number.

18042653 is a deficient number, since it is larger than the sum of its proper divisors (1).

18042653 is an equidigital number, since it uses as much as digits as its factorization.

18042653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 18042653 is about 4247.6644170650. The cubic root of 18042653 is about 262.2809807266.

The spelling of 18042653 in words is "eighteen million, forty-two thousand, six hundred fifty-three".