3645473818 has 8 divisors (see below), whose sum is σ = 6249383712. Its totient is φ = 1562345916.

The previous prime is 3645473813. The next prime is 3645473827. The reversal of 3645473818 is 8183745463.

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

It is not an unprimeable number, because it can be changed into a prime (3645473813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130195480 + ... + 130195507.

It is an arithmetic number, because the mean of its divisors is an integer number (781172964).

Almost surely, 2^3645473818 is an apocalyptic number.

3645473818 is a deficient number, since it is larger than the sum of its proper divisors (2603909894).

3645473818 is a wasteful number, since it uses less digits than its factorization.

3645473818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260390996.

The product of its digits is 1935360, while the sum is 49.

The square root of 3645473818 is about 60377.7592992652. The cubic root of 3645473818 is about 1539.0450336780.

The spelling of 3645473818 in words is "three billion, six hundred forty-five million, four hundred seventy-three thousand, eight hundred eighteen".