1320693516 has 72 divisors (see below), whose sum is σ = 3402663264. Its totient is φ = 431827200.

The previous prime is 1320693499. The next prime is 1320693541. The reversal of 1320693516 is 6153960231.

1320693516 is a `hidden beast` number, since 132 + 0 + 6 + 9 + 3 + 516 = 666.

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

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, 516441 + ... + 518991.

It is an arithmetic number, because the mean of its divisors is an integer number (47259212).

Almost surely, 2^1320693516 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 1320693516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701331632).

1320693516 is an abundant number, since it is smaller than the sum of its proper divisors (2081969748).

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

1320693516 is a wasteful number, since it uses less digits than its factorization.

1320693516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831 (or 2826 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1320693516 is about 36341.3471957218. The cubic root of 1320693516 is about 1097.1533880186.

The spelling of 1320693516 in words is "one billion, three hundred twenty million, six hundred ninety-three thousand, five hundred sixteen".