3621494945 has 8 divisors (see below), whose sum is σ = 4451789160. Its totient is φ = 2826532480.

The previous prime is 3621494939. The next prime is 3621494963. The reversal of 3621494945 is 5494941263.

It can be written as a sum of positive squares in 4 ways, for example, as 574896529 + 3046598416 = 23977^2 + 55196^2 .

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

It is not a de Polignac number, because 3621494945 - 2⁶ = 3621494881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3621494945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8832710 + ... + 8833119.

It is an arithmetic number, because the mean of its divisors is an integer number (556473645).

Almost surely, 2^3621494945 is an apocalyptic number.

It is an amenable number.

3621494945 is a deficient number, since it is larger than the sum of its proper divisors (830294215).

3621494945 is a wasteful number, since it uses less digits than its factorization.

3621494945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17665875.

The product of its digits is 933120, while the sum is 47.

The square root of 3621494945 is about 60178.8579569270. The cubic root of 3621494945 is about 1535.6631433215.

The spelling of 3621494945 in words is "three billion, six hundred twenty-one million, four hundred ninety-four thousand, nine hundred forty-five".