4530166721 has 2 divisors, whose sum is σ = 4530166722. Its totient is φ = 4530166720.

The previous prime is 4530166717. The next prime is 4530166759. The reversal of 4530166721 is 1276610354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4526598400 + 3568321 = 67280^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 4530166721 - 2² = 4530166717 is a prime.

It is not a weakly prime, because it can be changed into another prime (4530166021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2265083360 + 2265083361.

It is an arithmetic number, because the mean of its divisors is an integer number (2265083361).

Almost surely, 2^4530166721 is an apocalyptic number.

It is an amenable number.

4530166721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4530166721 is an equidigital number, since it uses as much as digits as its factorization.

4530166721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 4530166721 is about 67306.5132138042. The cubic root of 4530166721 is about 1654.6446082029.

The spelling of 4530166721 in words is "four billion, five hundred thirty million, one hundred sixty-six thousand, seven hundred twenty-one".