1245713165 has 8 divisors (see below), whose sum is σ = 1582788600. Its totient is φ = 937948672.

The previous prime is 1245713141. The next prime is 1245713179. The reversal of 1245713165 is 5613175421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 144336196 + 1101376969 = 12014^2 + 33187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245713165 - 2⁶ = 1245713101 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7327640 + ... + 7327809.

It is an arithmetic number, because the mean of its divisors is an integer number (197848575).

Almost surely, 2^1245713165 is an apocalyptic number.

It is an amenable number.

1245713165 is a deficient number, since it is larger than the sum of its proper divisors (337075435).

1245713165 is a wasteful number, since it uses less digits than its factorization.

1245713165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14655471.

The product of its digits is 25200, while the sum is 35.

The square root of 1245713165 is about 35294.6619901650. The cubic root of 1245713165 is about 1075.9845071428.

Adding to 1245713165 its reverse (5613175421), we get a palindrome (6858888586).

The spelling of 1245713165 in words is "one billion, two hundred forty-five million, seven hundred thirteen thousand, one hundred sixty-five".