18348544 has 20 divisors (see below), whose sum is σ = 36662274. Its totient is φ = 9174016.

The previous prime is 18348541. The next prime is 18348581. The reversal of 18348544 is 44584381.

It can be written as a sum of positive squares in only one way, i.e., 16908544 + 1440000 = 4112^2 + 1200^2 .

It is not an unprimeable number, because it can be changed into a prime (18348541) 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 as a sum of consecutive naturals, namely, 17407 + ... + 18430.

Almost surely, 2^18348544 is an apocalyptic number.

It is an amenable number.

18348544 is a deficient number, since it is larger than the sum of its proper divisors (18313730).

18348544 is an frugal number, since it uses more digits than its factorization.

18348544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35855 (or 35839 counting only the distinct ones).

The product of its digits is 61440, while the sum is 37.

The square root of 18348544 is about 4283.5200478111. The cubic root of 18348544 is about 263.7548995444.

The spelling of 18348544 in words is "eighteen million, three hundred forty-eight thousand, five hundred forty-four".