1309016669 has 2 divisors, whose sum is σ = 1309016670. Its totient is φ = 1309016668.

The previous prime is 1309016659. The next prime is 1309016729. The reversal of 1309016669 is 9666109031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 866419225 + 442597444 = 29435^2 + 21038^2 .

It is an emirp because it is prime and its reverse (9666109031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1309016669 is a prime.

It is a super-2 number, since 2×1309016669² = 3427049279439711122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1309016659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654508334 + 654508335.

It is an arithmetic number, because the mean of its divisors is an integer number (654508335).

Almost surely, 2^1309016669 is an apocalyptic number.

It is an amenable number.

1309016669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1309016669 is an equidigital number, since it uses as much as digits as its factorization.

1309016669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1309016669 is about 36180.3353909275. The cubic root of 1309016669 is about 1093.9103354217.

The spelling of 1309016669 in words is "one billion, three hundred nine million, sixteen thousand, six hundred sixty-nine".