818836416 has 126 divisors (see below), whose sum is σ = 2493736440. Its totient is φ = 256837632.

The previous prime is 818836411. The next prime is 818836429. The reversal of 818836416 is 614638818.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818836411) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 164005 + ... + 168923.

Almost surely, 2^818836416 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 818836416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246868220).

818836416 is an abundant number, since it is smaller than the sum of its proper divisors (1674900024).

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

818836416 is a wasteful number, since it uses less digits than its factorization.

818836416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971 (or 4941 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 818836416 is about 28615.3178560015. The cubic root of 818836416 is about 935.5472278706.

The spelling of 818836416 in words is "eight hundred eighteen million, eight hundred thirty-six thousand, four hundred sixteen".