1201368065 has 16 divisors (see below), whose sum is σ = 1499115600. Its totient is φ = 923123712.

The previous prime is 1201368061. The next prime is 1201368071. The reversal of 1201368065 is 5608631021.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 357058816 + 844309249 = 18896^2 + 29057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201368065 - 2² = 1201368061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1201368061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6521 + ... + 49449.

It is an arithmetic number, because the mean of its divisors is an integer number (93694725).

Almost surely, 2^1201368065 is an apocalyptic number.

It is an amenable number.

1201368065 is a deficient number, since it is larger than the sum of its proper divisors (297747535).

1201368065 is a wasteful number, since it uses less digits than its factorization.

1201368065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43156.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1201368065 is about 34660.7568440160. The cubic root of 1201368065 is about 1063.0622452604.

Adding to 1201368065 its reverse (5608631021), we get a palindrome (6809999086).

The spelling of 1201368065 in words is "one billion, two hundred one million, three hundred sixty-eight thousand, sixty-five".