818546040 has 256 divisors, whose sum is σ = 2964124800. Its totient is φ = 199729152.

The previous prime is 818545993. The next prime is 818546063. The reversal of 818546040 is 40645818.

818546040 is a `hidden beast` number, since 81 + 85 + 460 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 818545986 and 818546004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2428752 + ... + 2429088.

Almost surely, 2^818546040 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 818546040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1482062400).

818546040 is an abundant number, since it is smaller than the sum of its proper divisors (2145578760).

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

818546040 is a wasteful number, since it uses less digits than its factorization.

818546040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 818546040 is about 28610.2436200743. The cubic root of 818546040 is about 935.4366267888.

The spelling of 818546040 in words is "eight hundred eighteen million, five hundred forty-six thousand, forty".