18049548 has 24 divisors (see below), whose sum is σ = 45944640. Its totient is φ = 5469520.

The previous prime is 18049543. The next prime is 18049561. The reversal of 18049548 is 84594081.

It is not an unprimeable number, because it can be changed into a prime (18049543) 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, 68238 + ... + 68501.

It is an arithmetic number, because the mean of its divisors is an integer number (1914360).

Almost surely, 2^18049548 is an apocalyptic number.

It is an amenable number.

18049548 is an abundant number, since it is smaller than the sum of its proper divisors (27895092).

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

18049548 is a wasteful number, since it uses less digits than its factorization.

18049548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136757 (or 136755 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 18049548 is about 4248.4759620363. The cubic root of 18049548 is about 262.3143866979.

The spelling of 18049548 in words is "eighteen million, forty-nine thousand, five hundred forty-eight".