618243804 has 72 divisors (see below), whose sum is σ = 1614609360. Its totient is φ = 199314432.

The previous prime is 618243803. The next prime is 618243817. The reversal of 618243804 is 408342816.

618243804 is a `hidden beast` number, since 618 + 2 + 4 + 38 + 0 + 4 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618243803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237132 + ... + 239724.

It is an arithmetic number, because the mean of its divisors is an integer number (22425130).

Almost surely, 2^618243804 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 618243804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807304680).

618243804 is an abundant number, since it is smaller than the sum of its proper divisors (996365556).

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

618243804 is a wasteful number, since it uses less digits than its factorization.

618243804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819 (or 2814 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 618243804 is about 24864.5089233630. The cubic root of 618243804 is about 851.8960231508.

The spelling of 618243804 in words is "six hundred eighteen million, two hundred forty-three thousand, eight hundred four".