4661220149 has 2 divisors, whose sum is σ = 4661220150. Its totient is φ = 4661220148.

The previous prime is 4661220139. The next prime is 4661220169. The reversal of 4661220149 is 9410221664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2874889924 + 1786330225 = 53618^2 + 42265^2 .

It is a cyclic number.

It is not a de Polignac number, because 4661220149 - 2³² = 366252853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4661220139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330610074 + 2330610075.

It is an arithmetic number, because the mean of its divisors is an integer number (2330610075).

Almost surely, 2^4661220149 is an apocalyptic number.

It is an amenable number.

4661220149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4661220149 is an equidigital number, since it uses as much as digits as its factorization.

4661220149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 4661220149 is about 68273.1290406409. The cubic root of 4661220149 is about 1670.4489391471.

The spelling of 4661220149 in words is "four billion, six hundred sixty-one million, two hundred twenty thousand, one hundred forty-nine".