811248018 has 48 divisors (see below), whose sum is σ = 1904173920. Its totient is φ = 229724544.

The previous prime is 811248013. The next prime is 811248029. The reversal of 811248018 is 810842118.

It is a self number, because there is not a number n which added to its sum of digits gives 811248018.

It is not an unprimeable number, because it can be changed into a prime (811248013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21013 + ... + 45431.

It is an arithmetic number, because the mean of its divisors is an integer number (39670290).

Almost surely, 2^811248018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811248018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952086960).

811248018 is an abundant number, since it is smaller than the sum of its proper divisors (1092925902).

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

811248018 is a wasteful number, since it uses less digits than its factorization.

811248018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24551 (or 24544 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 33.

The square root of 811248018 is about 28482.4159438767. The cubic root of 811248018 is about 932.6482569921.

The spelling of 811248018 in words is "eight hundred eleven million, two hundred forty-eight thousand, eighteen".