18548642 has 16 divisors (see below), whose sum is σ = 31871232. Its totient is φ = 7931040.

The previous prime is 18548641. The next prime is 18548653. The reversal of 18548642 is 24684581.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18548596 and 18548605.

It is not an unprimeable number, because it can be changed into a prime (18548641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6023 + ... + 8565.

It is an arithmetic number, because the mean of its divisors is an integer number (1991952).

Almost surely, 2^18548642 is an apocalyptic number.

18548642 is a deficient number, since it is larger than the sum of its proper divisors (13322590).

18548642 is a wasteful number, since it uses less digits than its factorization.

18548642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073.

The product of its digits is 61440, while the sum is 38.

The square root of 18548642 is about 4306.8134391914. The cubic root of 18548642 is about 264.7102184194.

The spelling of 18548642 in words is "eighteen million, five hundred forty-eight thousand, six hundred forty-two".