1309862969 has 2 divisors, whose sum is σ = 1309862970. Its totient is φ = 1309862968.

The previous prime is 1309862963. The next prime is 1309862993. The reversal of 1309862969 is 9692689031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1203257344 + 106605625 = 34688^2 + 10325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1309862969 - 2⁸ = 1309862713 is a prime.

It is a super-2 number, since 2×1309862969² = 3431481995114989922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1309862969.

It is not a weakly prime, because it can be changed into another prime (1309862963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654931484 + 654931485.

It is an arithmetic number, because the mean of its divisors is an integer number (654931485).

Almost surely, 2^1309862969 is an apocalyptic number.

It is an amenable number.

1309862969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1309862969 is an equidigital number, since it uses as much as digits as its factorization.

1309862969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 1309862969 is about 36192.0290810007. The cubic root of 1309862969 is about 1094.1460280860.

It can be divided in two parts, 13098 and 62969, that added together give a palindrome (76067).

The spelling of 1309862969 in words is "one billion, three hundred nine million, eight hundred sixty-two thousand, nine hundred sixty-nine".