18934548 has 12 divisors (see below), whose sum is σ = 44180640. Its totient is φ = 6311512.

The previous prime is 18934547. The next prime is 18934607. The reversal of 18934548 is 84543981.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18934547) 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, 788928 + ... + 788951.

It is an arithmetic number, because the mean of its divisors is an integer number (3681720).

Almost surely, 2^18934548 is an apocalyptic number.

It is an amenable number.

18934548 is an abundant number, since it is smaller than the sum of its proper divisors (25246092).

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

18934548 is a wasteful number, since it uses less digits than its factorization.

18934548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577886 (or 1577884 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 18934548 is about 4351.3846072256. The cubic root of 18934548 is about 266.5334049438.

It can be divided in two parts, 1893 and 4548, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 18934548 in words is "eighteen million, nine hundred thirty-four thousand, five hundred forty-eight".