1309648916 has 6 divisors (see below), whose sum is σ = 2291885610. Its totient is φ = 654824456.

The previous prime is 1309648913. The next prime is 1309648919. The reversal of 1309648916 is 6198469031.

It is an interprime number because it is at equal distance from previous prime (1309648913) and next prime (1309648919).

It can be written as a sum of positive squares in only one way, i.e., 868480900 + 441168016 = 29470^2 + 21004^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309648913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163706111 + ... + 163706118.

It is an arithmetic number, because the mean of its divisors is an integer number (381980935).

Almost surely, 2^1309648916 is an apocalyptic number.

It is an amenable number.

1309648916 is a deficient number, since it is larger than the sum of its proper divisors (982236694).

1309648916 is a wasteful number, since it uses less digits than its factorization.

1309648916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327412233 (or 327412231 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1309648916 is about 36189.0717758828. The cubic root of 1309648916 is about 1094.0864243961.

The spelling of 1309648916 in words is "one billion, three hundred nine million, six hundred forty-eight thousand, nine hundred sixteen".