18716144 has 10 divisors (see below), whose sum is σ = 36262560. Its totient is φ = 9358064.

The previous prime is 18716143. The next prime is 18716153. The reversal of 18716144 is 44161781.

It is a self number, because there is not a number n which added to its sum of digits gives 18716144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18716141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584864 + ... + 584895.

It is an arithmetic number, because the mean of its divisors is an integer number (3626256).

Almost surely, 2^18716144 is an apocalyptic number.

It is an amenable number.

18716144 is a deficient number, since it is larger than the sum of its proper divisors (17546416).

18716144 is a wasteful number, since it uses less digits than its factorization.

18716144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169767 (or 1169761 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 18716144 is about 4326.2158984498. The cubic root of 18716144 is about 265.5046465424.

The spelling of 18716144 in words is "eighteen million, seven hundred sixteen thousand, one hundred forty-four".