1308819969 has 24 divisors (see below), whose sum is σ = 1965600000. Its totient is φ = 838300320.

The previous prime is 1308819947. The next prime is 1308819971. The reversal of 1308819969 is 9699188031.

It is not a de Polignac number, because 1308819969 - 2⁸ = 1308819713 is a prime.

It is a super-2 number, since 2×1308819969² = 3426019422506321922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1308819929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21907 + ... + 55655.

It is an arithmetic number, because the mean of its divisors is an integer number (81900000).

Almost surely, 2^1308819969 is an apocalyptic number.

It is an amenable number.

1308819969 is a deficient number, since it is larger than the sum of its proper divisors (656780031).

1308819969 is a wasteful number, since it uses less digits than its factorization.

1308819969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33925 (or 33922 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The square root of 1308819969 is about 36177.6169613202. The cubic root of 1308819969 is about 1093.8555403615.

The spelling of 1308819969 in words is "one billion, three hundred eight million, eight hundred nineteen thousand, nine hundred sixty-nine".