18753389 has 2 divisors, whose sum is σ = 18753390. Its totient is φ = 18753388.

The previous prime is 18753379. The next prime is 18753391. The reversal of 18753389 is 98335781.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18748900 + 4489 = 4330^2 + 67^2 .

It is a cyclic number.

It is not a de Polignac number, because 18753389 - 2²⁴ = 1976173 is a prime.

Together with 18753391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18753379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9376694 + 9376695.

It is an arithmetic number, because the mean of its divisors is an integer number (9376695).

Almost surely, 2^18753389 is an apocalyptic number.

It is an amenable number.

18753389 is a deficient number, since it is larger than the sum of its proper divisors (1).

18753389 is an equidigital number, since it uses as much as digits as its factorization.

18753389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 18753389 is about 4330.5183292534. The cubic root of 18753389 is about 265.6806473309.

The spelling of 18753389 in words is "eighteen million, seven hundred fifty-three thousand, three hundred eighty-nine".