193909153 has 2 divisors, whose sum is σ = 193909154. Its totient is φ = 193909152.

The previous prime is 193909151. The next prime is 193909207. The reversal of 193909153 is 351909391.

193909153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147573904 + 46335249 = 12148^2 + 6807^2 .

It is a cyclic number.

It is not a de Polignac number, because 193909153 - 2¹ = 193909151 is a prime.

Together with 193909151, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (193909151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96954576 + 96954577.

It is an arithmetic number, because the mean of its divisors is an integer number (96954577).

Almost surely, 2^193909153 is an apocalyptic number.

It is an amenable number.

193909153 is a deficient number, since it is larger than the sum of its proper divisors (1).

193909153 is an equidigital number, since it uses as much as digits as its factorization.

193909153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32805, while the sum is 40.

The square root of 193909153 is about 13925.1266780593. The cubic root of 193909153 is about 578.8056606090.

The spelling of 193909153 in words is "one hundred ninety-three million, nine hundred nine thousand, one hundred fifty-three".