18745369 has 2 divisors, whose sum is σ = 18745370. Its totient is φ = 18745368.

The previous prime is 18745351. The next prime is 18745387. The reversal of 18745369 is 96354781.

It is a balanced prime because it is at equal distance from previous prime (18745351) and next prime (18745387).

It can be written as a sum of positive squares in only one way, i.e., 12166144 + 6579225 = 3488^2 + 2565^2 .

It is a cyclic number.

It is not a de Polignac number, because 18745369 - 2¹³ = 18737177 is a prime.

It is a super-2 number, since 2×18745369² = 702777717892322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18745319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9372684 + 9372685.

It is an arithmetic number, because the mean of its divisors is an integer number (9372685).

Almost surely, 2^18745369 is an apocalyptic number.

It is an amenable number.

18745369 is a deficient number, since it is larger than the sum of its proper divisors (1).

18745369 is an equidigital number, since it uses as much as digits as its factorization.

18745369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 18745369 is about 4329.5922440803. The cubic root of 18745369 is about 265.6427686199.

The spelling of 18745369 in words is "eighteen million, seven hundred forty-five thousand, three hundred sixty-nine".