1309643468 has 12 divisors (see below), whose sum is σ = 2619286992. Its totient is φ = 561275760.

The previous prime is 1309643459. The next prime is 1309643497. The reversal of 1309643468 is 8643469031.

1309643468 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23386463 + ... + 23386518.

It is an arithmetic number, because the mean of its divisors is an integer number (218273916).

Almost surely, 2^1309643468 is an apocalyptic number.

It is an amenable number.

1309643468 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1309643468 is a wasteful number, since it uses less digits than its factorization.

1309643468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46772992 (or 46772990 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 1309643468 is about 36188.9965044625. The cubic root of 1309643468 is about 1094.0849072996.

The spelling of 1309643468 in words is "one billion, three hundred nine million, six hundred forty-three thousand, four hundred sixty-eight".