1300271989 has 2 divisors, whose sum is σ = 1300271990. Its totient is φ = 1300271988.

The previous prime is 1300271971. The next prime is 1300272079. The reversal of 1300271989 is 9891720031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 877640625 + 422631364 = 29625^2 + 20558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300271989 - 2⁵ = 1300271957 is a prime.

It is a super-2 number, since 2×1300271989² = 3381414490756032242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300271939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650135994 + 650135995.

It is an arithmetic number, because the mean of its divisors is an integer number (650135995).

Almost surely, 2^1300271989 is an apocalyptic number.

It is an amenable number.

1300271989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300271989 is an equidigital number, since it uses as much as digits as its factorization.

1300271989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1300271989 is about 36059.2843661657. The cubic root of 1300271989 is about 1091.4689923326.

The spelling of 1300271989 in words is "one billion, three hundred million, two hundred seventy-one thousand, nine hundred eighty-nine".