1201601365 has 4 divisors (see below), whose sum is σ = 1441921644. Its totient is φ = 961281088.

The previous prime is 1201601339. The next prime is 1201601369. The reversal of 1201601365 is 5631061021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5631061021 = 739 ⋅7619839.

It can be written as a sum of positive squares in 2 ways, for example, as 140991876 + 1060609489 = 11874^2 + 32567^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201601365 - 2⁹ = 1201600853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201601369) 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, 120160132 + ... + 120160141.

It is an arithmetic number, because the mean of its divisors is an integer number (360480411).

Almost surely, 2^1201601365 is an apocalyptic number.

It is an amenable number.

1201601365 is a deficient number, since it is larger than the sum of its proper divisors (240320279).

1201601365 is an equidigital number, since it uses as much as digits as its factorization.

1201601365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240320278.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1201601365 is about 34664.1221582200. The cubic root of 1201601365 is about 1063.1310546943.

Adding to 1201601365 its reverse (5631061021), we get a palindrome (6832662386).

The spelling of 1201601365 in words is "one billion, two hundred one million, six hundred one thousand, three hundred sixty-five".