818650368 has 144 divisors (see below), whose sum is σ = 2563666560. Its totient is φ = 256794624.

The previous prime is 818650361. The next prime is 818650411. The reversal of 818650368 is 863056818.

818650368 is a `hidden beast` number, since 8 + 1 + 86 + 503 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818650361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114021 + ... + 120987.

It is an arithmetic number, because the mean of its divisors is an integer number (17803240).

Almost surely, 2^818650368 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 818650368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281833280).

818650368 is an abundant number, since it is smaller than the sum of its proper divisors (1745016192).

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

818650368 is a wasteful number, since it uses less digits than its factorization.

818650368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7009 (or 6989 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 818650368 is about 28612.0668250303. The cubic root of 818650368 is about 935.4763672072.

The spelling of 818650368 in words is "eight hundred eighteen million, six hundred fifty thousand, three hundred sixty-eight".