1311826716 has 72 divisors (see below), whose sum is σ = 3486756000. Its totient is φ = 415255680.

The previous prime is 1311826699. The next prime is 1311826727. The reversal of 1311826716 is 6176281131.

It is a super-2 number, since 2×1311826716² = 3441778665622689312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53385 + ... + 73983.

Almost surely, 2^1311826716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311826716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743378000).

1311826716 is an abundant number, since it is smaller than the sum of its proper divisors (2174929284).

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

1311826716 is a wasteful number, since it uses less digits than its factorization.

1311826716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20699 (or 20694 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1311826716 is about 36219.1484714923. The cubic root of 1311826716 is about 1094.6925364318.

The spelling of 1311826716 in words is "one billion, three hundred eleven million, eight hundred twenty-six thousand, seven hundred sixteen".