3621991141 has 8 divisors (see below), whose sum is σ = 3676552064. Its totient is φ = 3567564000.

The previous prime is 3621991129. The next prime is 3621991183. The reversal of 3621991141 is 1411991263.

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

It is a cyclic number.

It is not a de Polignac number, because 3621991141 - 2⁹ = 3621990629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3621991141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621991441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21790 + ... + 87856.

It is an arithmetic number, because the mean of its divisors is an integer number (459569008).

Almost surely, 2^3621991141 is an apocalyptic number.

It is an amenable number.

3621991141 is a deficient number, since it is larger than the sum of its proper divisors (54560923).

3621991141 is an equidigital number, since it uses as much as digits as its factorization.

3621991141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66891.

The product of its digits is 11664, while the sum is 37.

The square root of 3621991141 is about 60182.9804928270. The cubic root of 3621991141 is about 1535.7332759713.

The spelling of 3621991141 in words is "three billion, six hundred twenty-one million, nine hundred ninety-one thousand, one hundred forty-one".