161071193 has 2 divisors, whose sum is σ = 161071194. Its totient is φ = 161071192.

The previous prime is 161071147. The next prime is 161071199. The reversal of 161071193 is 391170161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160985344 + 85849 = 12688^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 161071193 - 2⁶ = 161071129 is a prime.

It is not a weakly prime, because it can be changed into another prime (161071199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80535596 + 80535597.

It is an arithmetic number, because the mean of its divisors is an integer number (80535597).

Almost surely, 2^161071193 is an apocalyptic number.

It is an amenable number.

161071193 is a deficient number, since it is larger than the sum of its proper divisors (1).

161071193 is an equidigital number, since it uses as much as digits as its factorization.

161071193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 161071193 is about 12691.3826275942. The cubic root of 161071193 is about 544.0923567693.

The spelling of 161071193 in words is "one hundred sixty-one million, seventy-one thousand, one hundred ninety-three".