1301427565 has 8 divisors (see below), whose sum is σ = 1564023960. Its totient is φ = 1039601472.

The previous prime is 1301427559. The next prime is 1301427581. The reversal of 1301427565 is 5657241031.

It can be written as a sum of positive squares in 4 ways, for example, as 349951849 + 951475716 = 18707^2 + 30846^2 .

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 1301427565 - 2⁷ = 1301427437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1301427565.

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, 188850 + ... + 195619.

It is an arithmetic number, because the mean of its divisors is an integer number (195502995).

Almost surely, 2^1301427565 is an apocalyptic number.

It is an amenable number.

1301427565 is a deficient number, since it is larger than the sum of its proper divisors (262596395).

1301427565 is an equidigital number, since it uses as much as digits as its factorization.

1301427565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385151.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1301427565 is about 36075.3040874225. The cubic root of 1301427565 is about 1091.7922328873.

Adding to 1301427565 its reverse (5657241031), we get a palindrome (6958668596).

The spelling of 1301427565 in words is "one billion, three hundred one million, four hundred twenty-seven thousand, five hundred sixty-five".