161166349 has 2 divisors, whose sum is σ = 161166350. Its totient is φ = 161166348.

The previous prime is 161166301. The next prime is 161166403. The reversal of 161166349 is 943661161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143568324 + 17598025 = 11982^2 + 4195^2 .

It is an emirp because it is prime and its reverse (943661161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161166349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161176349) 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, 80583174 + 80583175.

It is an arithmetic number, because the mean of its divisors is an integer number (80583175).

Almost surely, 2^161166349 is an apocalyptic number.

It is an amenable number.

161166349 is a deficient number, since it is larger than the sum of its proper divisors (1).

161166349 is an equidigital number, since it uses as much as digits as its factorization.

161166349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 161166349 is about 12695.1309170091. The cubic root of 161166349 is about 544.1994801252.

The spelling of 161166349 in words is "one hundred sixty-one million, one hundred sixty-six thousand, three hundred forty-nine".