18949548 has 24 divisors (see below), whose sum is σ = 44301040. Its totient is φ = 6304320.

The previous prime is 18949537. The next prime is 18949549. The reversal of 18949548 is 84594981.

It is a junction number, because it is equal to n+sod(n) for n = 18949497 and 18949506.

It is not an unprimeable number, because it can be changed into a prime (18949549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6738 + ... + 9126.

Almost surely, 2^18949548 is an apocalyptic number.

It is an amenable number.

18949548 is an abundant number, since it is smaller than the sum of its proper divisors (25351492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18949548 is a wasteful number, since it uses less digits than its factorization.

18949548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057 (or 3055 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 18949548 is about 4353.1078553144. The cubic root of 18949548 is about 266.6037691936.

The spelling of 18949548 in words is "eighteen million, nine hundred forty-nine thousand, five hundred forty-eight".