193386961 has 2 divisors, whose sum is σ = 193386962. Its totient is φ = 193386960.

The previous prime is 193386931. The next prime is 193386979. The reversal of 193386961 is 169683391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153140625 + 40246336 = 12375^2 + 6344^2 .

It is an emirp because it is prime and its reverse (169683391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 193386961 - 2⁹ = 193386449 is a prime.

It is not a weakly prime, because it can be changed into another prime (193386931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96693480 + 96693481.

It is an arithmetic number, because the mean of its divisors is an integer number (96693481).

Almost surely, 2^193386961 is an apocalyptic number.

It is an amenable number.

193386961 is a deficient number, since it is larger than the sum of its proper divisors (1).

193386961 is an equidigital number, since it uses as much as digits as its factorization.

193386961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 193386961 is about 13906.3640467234. The cubic root of 193386961 is about 578.2856242889.

The spelling of 193386961 in words is "one hundred ninety-three million, three hundred eighty-six thousand, nine hundred sixty-one".