18124149 has 4 divisors (see below), whose sum is σ = 24165536. Its totient is φ = 12082764.

The previous prime is 18124123. The next prime is 18124153. The reversal of 18124149 is 94142181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18124149 - 2⁷ = 18124021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18124109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3020689 + ... + 3020694.

It is an arithmetic number, because the mean of its divisors is an integer number (6041384).

Almost surely, 2^18124149 is an apocalyptic number.

It is an amenable number.

18124149 is a deficient number, since it is larger than the sum of its proper divisors (6041387).

18124149 is an equidigital number, since it uses as much as digits as its factorization.

18124149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041386.

The product of its digits is 2304, while the sum is 30.

The square root of 18124149 is about 4257.2466454271. The cubic root of 18124149 is about 262.6752824768.

The spelling of 18124149 in words is "eighteen million, one hundred twenty-four thousand, one hundred forty-nine".