1316844780 has 48 divisors (see below), whose sum is σ = 3881230080. Its totient is φ = 332676288.

The previous prime is 1316844757. The next prime is 1316844787. The reversal of 1316844780 is 874486131.

It is a super-2 number, since 2×1316844780² = 3468160349226496800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1316844787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576424 + ... + 578703.

It is an arithmetic number, because the mean of its divisors is an integer number (80858960).

Almost surely, 2^1316844780 is an apocalyptic number.

1316844780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316844780 is an abundant number, since it is smaller than the sum of its proper divisors (2564385300).

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

1316844780 is a wasteful number, since it uses less digits than its factorization.

1316844780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155158 (or 1155156 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1316844780 is about 36288.3559837036. The cubic root of 1316844780 is about 1096.0865843028.

The spelling of 1316844780 in words is "one billion, three hundred sixteen million, eight hundred forty-four thousand, seven hundred eighty".