18945124 has 12 divisors (see below), whose sum is σ = 36168048. Its totient is φ = 8611400.

The previous prime is 18945119. The next prime is 18945127. The reversal of 18945124 is 42154981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18945124.

It is not an unprimeable number, because it can be changed into a prime (18945127) 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, 215242 + ... + 215329.

It is an arithmetic number, because the mean of its divisors is an integer number (3014004).

Almost surely, 2^18945124 is an apocalyptic number.

It is an amenable number.

18945124 is a deficient number, since it is larger than the sum of its proper divisors (17222924).

18945124 is a wasteful number, since it uses less digits than its factorization.

18945124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430586 (or 430584 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 18945124 is about 4352.5996829481. The cubic root of 18945124 is about 266.5830202928.

Subtracting from 18945124 its sum of digits (34), we obtain a triangular number (18945090 = T₆₁₅₅).

The spelling of 18945124 in words is "eighteen million, nine hundred forty-five thousand, one hundred twenty-four".