201965923 has 2 divisors, whose sum is σ = 201965924. Its totient is φ = 201965922.

The previous prime is 201965903. The next prime is 201965957. The reversal of 201965923 is 329569102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201965923 - 2⁵ = 201965891 is a prime.

It is not a weakly prime, because it can be changed into another prime (201965903) 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, 100982961 + 100982962.

It is an arithmetic number, because the mean of its divisors is an integer number (100982962).

Almost surely, 2^201965923 is an apocalyptic number.

201965923 is a deficient number, since it is larger than the sum of its proper divisors (1).

201965923 is an equidigital number, since it uses as much as digits as its factorization.

201965923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 201965923 is about 14211.4715283112. The cubic root of 201965923 is about 586.7134346684.

The spelling of 201965923 in words is "two hundred one million, nine hundred sixty-five thousand, nine hundred twenty-three".