1818368844 has 24 divisors (see below), whose sum is σ = 4245266928. Its totient is φ = 605779200.

The previous prime is 1818368843. The next prime is 1818368911. The reversal of 1818368844 is 4488638181.

It is not an unprimeable number, because it can be changed into a prime (1818368843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20457 + ... + 63680.

It is an arithmetic number, because the mean of its divisors is an integer number (176886122).

Almost surely, 2^1818368844 is an apocalyptic number.

It is an amenable number.

1818368844 is an abundant number, since it is smaller than the sum of its proper divisors (2426898084).

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

1818368844 is a wasteful number, since it uses less digits than its factorization.

1818368844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85945 (or 85943 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 51.

The square root of 1818368844 is about 42642.3362868406. The cubic root of 1818368844 is about 1220.5642923904.

The spelling of 1818368844 in words is "one billion, eight hundred eighteen million, three hundred sixty-eight thousand, eight hundred forty-four".