18340616 has 16 divisors (see below), whose sum is σ = 39301440. Its totient is φ = 7860240.

The previous prime is 18340613. The next prime is 18340627. The reversal of 18340616 is 61604381.

It is not an unprimeable number, because it can be changed into a prime (18340613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163700 + ... + 163811.

It is an arithmetic number, because the mean of its divisors is an integer number (2456340).

Almost surely, 2^18340616 is an apocalyptic number.

It is an amenable number.

18340616 is an abundant number, since it is smaller than the sum of its proper divisors (20960824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18340616 is a wasteful number, since it uses less digits than its factorization.

18340616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327524 (or 327520 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 18340616 is about 4282.5945406961. The cubic root of 18340616 is about 263.7169065192.

Adding to 18340616 its reverse (61604381), we get a palindrome (79944997).

The spelling of 18340616 in words is "eighteen million, three hundred forty thousand, six hundred sixteen".