18954424 has 8 divisors (see below), whose sum is σ = 35539560. Its totient is φ = 9477208.

The previous prime is 18954421. The next prime is 18954431. The reversal of 18954424 is 42445981.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18954421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1184644 + ... + 1184659.

It is an arithmetic number, because the mean of its divisors is an integer number (4442445).

Almost surely, 2^18954424 is an apocalyptic number.

It is an amenable number.

18954424 is a deficient number, since it is larger than the sum of its proper divisors (16585136).

18954424 is a wasteful number, since it uses less digits than its factorization.

18954424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369309 (or 2369305 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 18954424 is about 4353.6678789269. The cubic root of 18954424 is about 266.6266342684.

The spelling of 18954424 in words is "eighteen million, nine hundred fifty-four thousand, four hundred twenty-four".