4618621361 has 2 divisors, whose sum is σ = 4618621362. Its totient is φ = 4618621360.

The previous prime is 4618621313. The next prime is 4618621363. The reversal of 4618621361 is 1631268164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3888270736 + 730350625 = 62356^2 + 27025^2 .

It is a cyclic number.

It is not a de Polignac number, because 4618621361 - 2¹⁰ = 4618620337 is a prime.

Together with 4618621363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4618621363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2309310680 + 2309310681.

It is an arithmetic number, because the mean of its divisors is an integer number (2309310681).

Almost surely, 2^4618621361 is an apocalyptic number.

It is an amenable number.

4618621361 is a deficient number, since it is larger than the sum of its proper divisors (1).

4618621361 is an equidigital number, since it uses as much as digits as its factorization.

4618621361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 4618621361 is about 67960.4396763293. The cubic root of 4618621361 is about 1665.3446260335.

The spelling of 4618621361 in words is "four billion, six hundred eighteen million, six hundred twenty-one thousand, three hundred sixty-one".