1368560129 has 4 divisors (see below), whose sum is σ = 1449063684. Its totient is φ = 1288056576.

The previous prime is 1368560119. The next prime is 1368560153. The reversal of 1368560129 is 9210658631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9210658631 = 66169 ⋅139199.

It can be written as a sum of positive squares in 2 ways, for example, as 926593600 + 441966529 = 30440^2 + 21023^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368560129 - 2¹⁶ = 1368494593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1368560119) 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, 40251752 + ... + 40251785.

It is an arithmetic number, because the mean of its divisors is an integer number (362265921).

Almost surely, 2^1368560129 is an apocalyptic number.

It is an amenable number.

1368560129 is a deficient number, since it is larger than the sum of its proper divisors (80503555).

1368560129 is an equidigital number, since it uses as much as digits as its factorization.

1368560129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80503554.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1368560129 is about 36994.0553197402. The cubic root of 1368560129 is about 1110.2513104108.

The spelling of 1368560129 in words is "one billion, three hundred sixty-eight million, five hundred sixty thousand, one hundred twenty-nine".