770195161 has 2 divisors, whose sum is σ = 770195162. Its totient is φ = 770195160.

The previous prime is 770195159. The next prime is 770195197. The reversal of 770195161 is 161591077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 575760025 + 194435136 = 23995^2 + 13944^2 .

It is a cyclic number.

It is not a de Polignac number, because 770195161 - 2¹ = 770195159 is a prime.

Together with 770195159, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 770195161.

It is not a weakly prime, because it can be changed into another prime (770195131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385097580 + 385097581.

It is an arithmetic number, because the mean of its divisors is an integer number (385097581).

Almost surely, 2^770195161 is an apocalyptic number.

It is an amenable number.

770195161 is a deficient number, since it is larger than the sum of its proper divisors (1).

770195161 is an equidigital number, since it uses as much as digits as its factorization.

770195161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 37.

The square root of 770195161 is about 27752.3901853516. The cubic root of 770195161 is about 916.6430751982.

The spelling of 770195161 in words is "seven hundred seventy million, one hundred ninety-five thousand, one hundred sixty-one".