1309816896 has 28 divisors (see below), whose sum is σ = 3465557712. Its totient is φ = 436605568.

The previous prime is 1309816883. The next prime is 1309816897. The reversal of 1309816896 is 6986189031.

It is not an unprimeable number, because it can be changed into a prime (1309816897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3410790 + ... + 3411173.

Almost surely, 2^1309816896 is an apocalyptic number.

1309816896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1309816896 is an abundant number, since it is smaller than the sum of its proper divisors (2155740816).

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

1309816896 is an equidigital number, since it uses as much as digits as its factorization.

1309816896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821978 (or 6821968 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 1309816896 is about 36191.3925678468. The cubic root of 1309816896 is about 1094.1331994715.

The spelling of 1309816896 in words is "one billion, three hundred nine million, eight hundred sixteen thousand, eight hundred ninety-six".