3611221373 has 2 divisors, whose sum is σ = 3611221374. Its totient is φ = 3611221372.

The previous prime is 3611221363. The next prime is 3611221387. The reversal of 3611221373 is 3731221163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2485820164 + 1125401209 = 49858^2 + 33547^2 .

It is a cyclic number.

It is not a de Polignac number, because 3611221373 - 2⁴ = 3611221357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3611221333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805610686 + 1805610687.

It is an arithmetic number, because the mean of its divisors is an integer number (1805610687).

Almost surely, 2^3611221373 is an apocalyptic number.

It is an amenable number.

3611221373 is a deficient number, since it is larger than the sum of its proper divisors (1).

3611221373 is an equidigital number, since it uses as much as digits as its factorization.

3611221373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 3611221373 is about 60093.4386851011. The cubic root of 3611221373 is about 1534.2096286519.

The spelling of 3611221373 in words is "three billion, six hundred eleven million, two hundred twenty-one thousand, three hundred seventy-three".