1301256769 has 8 divisors (see below), whose sum is σ = 1308850920. Its totient is φ = 1293680256.

The previous prime is 1301256757. The next prime is 1301256839. The reversal of 1301256769 is 9676521031.

It can be written as a sum of positive squares in 4 ways, for example, as 34751025 + 1266505744 = 5895^2 + 35588^2 .

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 1301256769 - 2⁷ = 1301256641 is a prime.

It is a super-2 number, since 2×1301256769² = 3386538357736638722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301256169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161259 + ... + 169135.

It is an arithmetic number, because the mean of its divisors is an integer number (163606365).

Almost surely, 2^1301256769 is an apocalyptic number.

It is an amenable number.

1301256769 is a deficient number, since it is larger than the sum of its proper divisors (7594151).

1301256769 is an equidigital number, since it uses as much as digits as its factorization.

1301256769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8819.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 1301256769 is about 36072.9367947773. The cubic root of 1301256769 is about 1091.7444694648.

The spelling of 1301256769 in words is "one billion, three hundred one million, two hundred fifty-six thousand, seven hundred sixty-nine".