161260193 has 2 divisors, whose sum is σ = 161260194. Its totient is φ = 161260192.

The previous prime is 161260133. The next prime is 161260207. The reversal of 161260193 is 391062161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98644624 + 62615569 = 9932^2 + 7913^2 .

It is a cyclic number.

It is not a de Polignac number, because 161260193 - 2²⁴ = 144482977 is a prime.

It is not a weakly prime, because it can be changed into another prime (161260103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80630096 + 80630097.

It is an arithmetic number, because the mean of its divisors is an integer number (80630097).

Almost surely, 2^161260193 is an apocalyptic number.

It is an amenable number.

161260193 is a deficient number, since it is larger than the sum of its proper divisors (1).

161260193 is an equidigital number, since it uses as much as digits as its factorization.

161260193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 161260193 is about 12698.8264418410. The cubic root of 161260193 is about 544.3050851873.

The spelling of 161260193 in words is "one hundred sixty-one million, two hundred sixty thousand, one hundred ninety-three".