18588149 has 2 divisors, whose sum is σ = 18588150. Its totient is φ = 18588148.

The previous prime is 18588113. The next prime is 18588173. The reversal of 18588149 is 94188581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16851025 + 1737124 = 4105^2 + 1318^2 .

It is an emirp because it is prime and its reverse (94188581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18588149 - 2⁸ = 18587893 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 (18588109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9294074 + 9294075.

It is an arithmetic number, because the mean of its divisors is an integer number (9294075).

Almost surely, 2^18588149 is an apocalyptic number.

It is an amenable number.

18588149 is a deficient number, since it is larger than the sum of its proper divisors (1).

18588149 is an equidigital number, since it uses as much as digits as its factorization.

18588149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 44.

The square root of 18588149 is about 4311.3975692344. The cubic root of 18588149 is about 264.8980217558.

The spelling of 18588149 in words is "eighteen million, five hundred eighty-eight thousand, one hundred forty-nine".