193645057 has 2 divisors, whose sum is σ = 193645058. Its totient is φ = 193645056.

The previous prime is 193645051. The next prime is 193645061. The reversal of 193645057 is 750546391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167029776 + 26615281 = 12924^2 + 5159^2 .

It is a cyclic number.

It is not a de Polignac number, because 193645057 - 2⁷ = 193644929 is a prime.

It is not a weakly prime, because it can be changed into another prime (193645051) 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, 96822528 + 96822529.

It is an arithmetic number, because the mean of its divisors is an integer number (96822529).

Almost surely, 2^193645057 is an apocalyptic number.

It is an amenable number.

193645057 is a deficient number, since it is larger than the sum of its proper divisors (1).

193645057 is an equidigital number, since it uses as much as digits as its factorization.

193645057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 193645057 is about 13915.6407326433. The cubic root of 193645057 is about 578.5427716800.

The spelling of 193645057 in words is "one hundred ninety-three million, six hundred forty-five thousand, fifty-seven".