193880849 has 2 divisors, whose sum is σ = 193880850. Its totient is φ = 193880848.

The previous prime is 193880833. The next prime is 193880891. The reversal of 193880849 is 948088391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188567824 + 5313025 = 13732^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 193880849 - 2⁴ = 193880833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 193880797 and 193880806.

It is not a weakly prime, because it can be changed into another prime (193880809) 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, 96940424 + 96940425.

It is an arithmetic number, because the mean of its divisors is an integer number (96940425).

Almost surely, 2^193880849 is an apocalyptic number.

It is an amenable number.

193880849 is a deficient number, since it is larger than the sum of its proper divisors (1).

193880849 is an equidigital number, since it uses as much as digits as its factorization.

193880849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 193880849 is about 13924.1103486004. The cubic root of 193880849 is about 578.7774973990. Note that the first 3 decimals are identical.

The spelling of 193880849 in words is "one hundred ninety-three million, eight hundred eighty thousand, eight hundred forty-nine".