464220161 has 2 divisors, whose sum is σ = 464220162. Its totient is φ = 464220160.

The previous prime is 464220137. The next prime is 464220181. The reversal of 464220161 is 161022464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420250000 + 43970161 = 20500^2 + 6631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-464220161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 464220161.

It is not a weakly prime, because it can be changed into another prime (464220101) 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, 232110080 + 232110081.

It is an arithmetic number, because the mean of its divisors is an integer number (232110081).

Almost surely, 2^464220161 is an apocalyptic number.

It is an amenable number.

464220161 is a deficient number, since it is larger than the sum of its proper divisors (1).

464220161 is an equidigital number, since it uses as much as digits as its factorization.

464220161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 464220161 is about 21545.7689814033. The cubic root of 464220161 is about 774.2977536025.

The spelling of 464220161 in words is "four hundred sixty-four million, two hundred twenty thousand, one hundred sixty-one".