1309365696 has 112 divisors (see below), whose sum is σ = 3672392960. Its totient is φ = 410572800.

The previous prime is 1309365667. The next prime is 1309365697. The reversal of 1309365696 is 6965639031.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309365697) 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 in 15 ways as a sum of consecutive naturals, for example, 549660 + ... + 552036.

Almost surely, 2^1309365696 is an apocalyptic number.

1309365696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1309365696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836196480).

1309365696 is an abundant number, since it is smaller than the sum of its proper divisors (2363027264).

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

1309365696 is a wasteful number, since it uses less digits than its factorization.

1309365696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562 (or 2552 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 48.

The square root of 1309365696 is about 36185.1585045582. The cubic root of 1309365696 is about 1094.0075509685.

The spelling of 1309365696 in words is "one billion, three hundred nine million, three hundred sixty-five thousand, six hundred ninety-six".