818945601 has 8 divisors (see below), whose sum is σ = 1095057600. Its totient is φ = 544398672.

The previous prime is 818945597. The next prime is 818945627. The reversal of 818945601 is 106549818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 818945601 - 2² = 818945597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (818545601) 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 7 ways as a sum of consecutive naturals, for example, 390045 + ... + 392138.

It is an arithmetic number, because the mean of its divisors is an integer number (136882200).

Almost surely, 2^818945601 is an apocalyptic number.

It is an amenable number.

818945601 is a deficient number, since it is larger than the sum of its proper divisors (276111999).

818945601 is a wasteful number, since it uses less digits than its factorization.

818945601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782535.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 818945601 is about 28617.2255992785. The cubic root of 818945601 is about 935.5888084933.

The spelling of 818945601 in words is "eight hundred eighteen million, nine hundred forty-five thousand, six hundred one".