1316780832 has 96 divisors (see below), whose sum is σ = 3668281344. Its totient is φ = 412160000.

The previous prime is 1316780819. The next prime is 1316780833. The reversal of 1316780832 is 2380876131.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1316780832² = 3467823519045224448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1316780833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143457 + ... + 1144607.

It is an arithmetic number, because the mean of its divisors is an integer number (38211264).

Almost surely, 2^1316780832 is an apocalyptic number.

1316780832 is a gapful number since it is divisible by the number (12) 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 1316780832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834140672).

1316780832 is an abundant number, since it is smaller than the sum of its proper divisors (2351500512).

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

1316780832 is a wasteful number, since it uses less digits than its factorization.

1316780832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1316780832 is about 36287.4748639252. The cubic root of 1316780832 is about 1096.0688414677.

The spelling of 1316780832 in words is "one billion, three hundred sixteen million, seven hundred eighty thousand, eight hundred thirty-two".