3621556141 has 12 divisors (see below), whose sum is σ = 4215860220. Its totient is φ = 3101958720.

The previous prime is 3621556139. The next prime is 3621556193. The reversal of 3621556141 is 1416551263.

It can be written as a sum of positive squares in 2 ways, for example, as 237807241 + 3383748900 = 15421^2 + 58170^2 .

It is not a de Polignac number, because 3621556141 - 2¹ = 3621556139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3621556097 and 3621556106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621556441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44161 + ... + 95881.

It is an arithmetic number, because the mean of its divisors is an integer number (351321685).

Almost surely, 2^3621556141 is an apocalyptic number.

It is an amenable number.

3621556141 is a deficient number, since it is larger than the sum of its proper divisors (594304079).

3621556141 is a wasteful number, since it uses less digits than its factorization.

3621556141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53164 (or 53157 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 3621556141 is about 60179.3664057707. The cubic root of 3621556141 is about 1535.6717931483.

The spelling of 3621556141 in words is "three billion, six hundred twenty-one million, five hundred fifty-six thousand, one hundred forty-one".