1818207852 has 12 divisors (see below), whose sum is σ = 4242485016. Its totient is φ = 606069280.

The previous prime is 1818207841. The next prime is 1818207887. The reversal of 1818207852 is 2587028181.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75758649 + ... + 75758672.

It is an arithmetic number, because the mean of its divisors is an integer number (353540418).

Almost surely, 2^1818207852 is an apocalyptic number.

1818207852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1818207852 is an abundant number, since it is smaller than the sum of its proper divisors (2424277164).

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

1818207852 is a wasteful number, since it uses less digits than its factorization.

1818207852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151517328 (or 151517326 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 1818207852 is about 42640.4485436070. The cubic root of 1818207852 is about 1220.5282698334.

The spelling of 1818207852 in words is "one billion, eight hundred eighteen million, two hundred seven thousand, eight hundred fifty-two".