1306326616 has 64 divisors (see below), whose sum is σ = 2865844800. Its totient is φ = 546643968.

The previous prime is 1306326599. The next prime is 1306326643. The reversal of 1306326616 is 6166236031.

It is a super-2 number, since 2×1306326616² = 3412978455340022912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690600 + ... + 692488.

It is an arithmetic number, because the mean of its divisors is an integer number (44778825).

Almost surely, 2^1306326616 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 1306326616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432922400).

1306326616 is an abundant number, since it is smaller than the sum of its proper divisors (1559518184).

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

1306326616 is a wasteful number, since it uses less digits than its factorization.

1306326616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 1306326616 is about 36143.1406493680. The cubic root of 1306326616 is about 1093.1604863416.

The spelling of 1306326616 in words is "one billion, three hundred six million, three hundred twenty-six thousand, six hundred sixteen".