193993801 has 2 divisors, whose sum is σ = 193993802. Its totient is φ = 193993800.

The previous prime is 193993771. The next prime is 193993823. The reversal of 193993801 is 108399391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173054025 + 20939776 = 13155^2 + 4576^2 .

It is a cyclic number.

It is not a de Polignac number, because 193993801 - 2¹⁷ = 193862729 is a prime.

It is not a weakly prime, because it can be changed into another prime (193993841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96996900 + 96996901.

It is an arithmetic number, because the mean of its divisors is an integer number (96996901).

Almost surely, 2^193993801 is an apocalyptic number.

It is an amenable number.

193993801 is a deficient number, since it is larger than the sum of its proper divisors (1).

193993801 is an equidigital number, since it uses as much as digits as its factorization.

193993801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 193993801 is about 13928.1657442752. The cubic root of 193993801 is about 578.8898712015.

The spelling of 193993801 in words is "one hundred ninety-three million, nine hundred ninety-three thousand, eight hundred one".