18422548 has 12 divisors (see below), whose sum is σ = 32284980. Its totient is φ = 9198272.

The previous prime is 18422519. The next prime is 18422557. The reversal of 18422548 is 84522481.

It can be written as a sum of positive squares in 2 ways, for example, as 9253764 + 9168784 = 3042^2 + 3028^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390 + ... + 6082.

It is an arithmetic number, because the mean of its divisors is an integer number (2690415).

Almost surely, 2^18422548 is an apocalyptic number.

It is an amenable number.

18422548 is a deficient number, since it is larger than the sum of its proper divisors (13862432).

18422548 is a wasteful number, since it uses less digits than its factorization.

18422548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6506 (or 6504 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 18422548 is about 4292.1495780087. The cubic root of 18422548 is about 264.1090191004.

The spelling of 18422548 in words is "eighteen million, four hundred twenty-two thousand, five hundred forty-eight".