193823961 has 4 divisors (see below), whose sum is σ = 258431952. Its totient is φ = 129215972.

The previous prime is 193823947. The next prime is 193823969. The reversal of 193823961 is 169328391.

193823961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 193823961 - 2¹⁵ = 193791193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (193823969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32303991 + ... + 32303996.

It is an arithmetic number, because the mean of its divisors is an integer number (64607988).

Almost surely, 2^193823961 is an apocalyptic number.

It is an amenable number.

193823961 is a deficient number, since it is larger than the sum of its proper divisors (64607991).

193823961 is an equidigital number, since it uses as much as digits as its factorization.

193823961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64607990.

The product of its digits is 69984, while the sum is 42.

The square root of 193823961 is about 13922.0674111283. The cubic root of 193823961 is about 578.7208840800.

The spelling of 193823961 in words is "one hundred ninety-three million, eight hundred twenty-three thousand, nine hundred sixty-one".