161393341 has 2 divisors, whose sum is σ = 161393342. Its totient is φ = 161393340.

The previous prime is 161393329. The next prime is 161393383. The reversal of 161393341 is 143393161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141848100 + 19545241 = 11910^2 + 4421^2 .

It is a cyclic number.

It is not a de Polignac number, because 161393341 - 2¹⁹ = 160869053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161393311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80696670 + 80696671.

It is an arithmetic number, because the mean of its divisors is an integer number (80696671).

Almost surely, 2^161393341 is an apocalyptic number.

It is an amenable number.

161393341 is a deficient number, since it is larger than the sum of its proper divisors (1).

161393341 is an equidigital number, since it uses as much as digits as its factorization.

161393341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 31.

The square root of 161393341 is about 12704.0678918211. The cubic root of 161393341 is about 544.4548497695.

The spelling of 161393341 in words is "one hundred sixty-one million, three hundred ninety-three thousand, three hundred forty-one".