818263168 has 32 divisors (see below), whose sum is σ = 1668054960. Its totient is φ = 399614208.

The previous prime is 818263123. The next prime is 818263169. The reversal of 818263168 is 861362818.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×818263168² = 1339109224210792448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (818263169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68830 + ... + 79837.

Almost surely, 2^818263168 is an apocalyptic number.

It is an amenable number.

818263168 is an abundant number, since it is smaller than the sum of its proper divisors (849791792).

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

818263168 is a wasteful number, since it uses less digits than its factorization.

818263168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148724 (or 148712 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 818263168 is about 28605.2996488413. The cubic root of 818263168 is about 935.3288587450.

The spelling of 818263168 in words is "eight hundred eighteen million, two hundred sixty-three thousand, one hundred sixty-eight".