18151416 has 96 divisors (see below), whose sum is σ = 52284960. Its totient is φ = 5677056.

The previous prime is 18151411. The next prime is 18151421. The reversal of 18151416 is 61415181.

It is an interprime number because it is at equal distance from previous prime (18151411) and next prime (18151421).

It is a self number, because there is not a number n which added to its sum of digits gives 18151416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18151411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160576 + ... + 160688.

It is an arithmetic number, because the mean of its divisors is an integer number (544635).

Almost surely, 2^18151416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18151416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26142480).

18151416 is an abundant number, since it is smaller than the sum of its proper divisors (34133544).

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

18151416 is a wasteful number, since it uses less digits than its factorization.

18151416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 238 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 18151416 is about 4260.4478637815. The cubic root of 18151416 is about 262.8069443478.

Adding to 18151416 its reverse (61415181), we get a palindrome (79566597).

The spelling of 18151416 in words is "eighteen million, one hundred fifty-one thousand, four hundred sixteen".