818078740 has 48 divisors (see below), whose sum is σ = 1771789824. Its totient is φ = 317088000.

The previous prime is 818078693. The next prime is 818078749. The reversal of 818078740 is 47870818.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818078749) 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 15 ways as a sum of consecutive naturals, for example, 120517 + ... + 127123.

It is an arithmetic number, because the mean of its divisors is an integer number (36912288).

Almost surely, 2^818078740 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 818078740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885894912).

818078740 is an abundant number, since it is smaller than the sum of its proper divisors (953711084).

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

818078740 is a wasteful number, since it uses less digits than its factorization.

818078740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6808 (or 6806 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 818078740 is about 28602.0757987947. The cubic root of 818078740 is about 935.2585823355.

It can be divided in two parts, 818078 and 740, that added together give a palindrome (818818).

The spelling of 818078740 in words is "eight hundred eighteen million, seventy-eight thousand, seven hundred forty".