4664331961 has 2 divisors, whose sum is σ = 4664331962. Its totient is φ = 4664331960.

The previous prime is 4664331949. The next prime is 4664332027. The reversal of 4664331961 is 1691334664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4208765625 + 455566336 = 64875^2 + 21344^2 .

It is a cyclic number.

It is not a de Polignac number, because 4664331961 - 2²⁷ = 4530114233 is a prime.

It is a super-2 number, since 2×4664331961² = 43511985284812211042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4664331911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2332165980 + 2332165981.

It is an arithmetic number, because the mean of its divisors is an integer number (2332165981).

Almost surely, 2^4664331961 is an apocalyptic number.

It is an amenable number.

4664331961 is a deficient number, since it is larger than the sum of its proper divisors (1).

4664331961 is an equidigital number, since it uses as much as digits as its factorization.

4664331961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 4664331961 is about 68295.9146728412. The cubic root of 4664331961 is about 1670.8205848084.

The spelling of 4664331961 in words is "four billion, six hundred sixty-four million, three hundred thirty-one thousand, nine hundred sixty-one".