1260817345 has 8 divisors (see below), whose sum is σ = 1513207080. Its totient is φ = 1008503040.

The previous prime is 1260817331. The next prime is 1260817351. The reversal of 1260817345 is 5437180621.

It can be written as a sum of positive squares in 4 ways, for example, as 750102544 + 510714801 = 27388^2 + 22599^2 .

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

It is not a de Polignac number, because 1260817345 - 2⁹ = 1260816833 is a prime.

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, 28935 + ... + 57955.

It is an arithmetic number, because the mean of its divisors is an integer number (189150885).

Almost surely, 2^1260817345 is an apocalyptic number.

It is an amenable number.

1260817345 is a deficient number, since it is larger than the sum of its proper divisors (252389735).

1260817345 is an equidigital number, since it uses as much as digits as its factorization.

1260817345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37715.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1260817345 is about 35507.9898755196. The cubic root of 1260817345 is about 1080.3157927124.

Adding to 1260817345 its reverse (5437180621), we get a palindrome (6697997966).

The spelling of 1260817345 in words is "one billion, two hundred sixty million, eight hundred seventeen thousand, three hundred forty-five".