18339716 has 24 divisors (see below), whose sum is σ = 34106520. Its totient is φ = 8612352.

The previous prime is 18339707. The next prime is 18339791. The reversal of 18339716 is 61793381.

It can be written as a sum of positive squares in 4 ways, for example, as 4426816 + 13912900 = 2104^2 + 3730^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18339716.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2156 + ... + 6428.

It is an arithmetic number, because the mean of its divisors is an integer number (1421105).

Almost surely, 2^18339716 is an apocalyptic number.

It is an amenable number.

18339716 is a deficient number, since it is larger than the sum of its proper divisors (15766804).

18339716 is a wasteful number, since it uses less digits than its factorization.

18339716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343 (or 4341 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 18339716 is about 4282.4894629176. The cubic root of 18339716 is about 263.7125927946.

The spelling of 18339716 in words is "eighteen million, three hundred thirty-nine thousand, seven hundred sixteen".