1320751615 has 8 divisors (see below), whose sum is σ = 1585156320. Its totient is φ = 1056431712.

The previous prime is 1320751591. The next prime is 1320751633. The reversal of 1320751615 is 5161570231.

1320751615 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320751615 - 2¹³ = 1320743423 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20542 + ... + 55348.

It is an arithmetic number, because the mean of its divisors is an integer number (198144540).

Almost surely, 2^1320751615 is an apocalyptic number.

1320751615 is a deficient number, since it is larger than the sum of its proper divisors (264404705).

1320751615 is an equidigital number, since it uses as much as digits as its factorization.

1320751615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42401.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1320751615 is about 36342.1465381449. The cubic root of 1320751615 is about 1097.1694761771.

The spelling of 1320751615 in words is "one billion, three hundred twenty million, seven hundred fifty-one thousand, six hundred fifteen".