1309969008 has 60 divisors (see below), whose sum is σ = 3668928120. Its totient is φ = 436318848.

The previous prime is 1309968991. The next prime is 1309969019. The reversal of 1309969008 is 8009699031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243435 + ... + 248757.

It is an arithmetic number, because the mean of its divisors is an integer number (61148802).

Almost surely, 2^1309969008 is an apocalyptic number.

1309969008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1309969008 is an abundant number, since it is smaller than the sum of its proper divisors (2358959112).

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

1309969008 is a wasteful number, since it uses less digits than its factorization.

1309969008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7046 (or 7037 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1309969008 is about 36193.4940009942. The cubic root of 1309969008 is about 1094.1755525535.

The spelling of 1309969008 in words is "one billion, three hundred nine million, nine hundred sixty-nine thousand, eight".