201968365 has 4 divisors (see below), whose sum is σ = 242362044. Its totient is φ = 161574688.

The previous prime is 201968341. The next prime is 201968401. The reversal of 201968365 is 563869102.

201968365 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.

It can be written as a sum of positive squares in 2 ways, for example, as 23532201 + 178436164 = 4851^2 + 13358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201968365 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20196832 + ... + 20196841.

It is an arithmetic number, because the mean of its divisors is an integer number (60590511).

Almost surely, 2^201968365 is an apocalyptic number.

It is an amenable number.

201968365 is a deficient number, since it is larger than the sum of its proper divisors (40393679).

201968365 is an equidigital number, since it uses as much as digits as its factorization.

201968365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40393678.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 201968365 is about 14211.5574445590. The cubic root of 201968365 is about 586.7157993386.

It can be divided in two parts, 20196 and 8365, that added together give a 4-th power (28561 = 13⁴).

The spelling of 201968365 in words is "two hundred one million, nine hundred sixty-eight thousand, three hundred sixty-five".