1320455115 has 80 divisors (see below), whose sum is σ = 2798642880. Its totient is φ = 582785280.

The previous prime is 1320455099. The next prime is 1320455207. The reversal of 1320455115 is 5115540231.

It is not a de Polignac number, because 1320455115 - 2⁴ = 1320455099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 74185 + ... + 90245.

It is an arithmetic number, because the mean of its divisors is an integer number (34983036).

Almost surely, 2^1320455115 is an apocalyptic number.

1320455115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1320455115 is an abundant number, since it is smaller than the sum of its proper divisors (1478187765).

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

1320455115 is a wasteful number, since it uses less digits than its factorization.

1320455115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16114 (or 16105 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1320455115 is about 36338.0670234398. The cubic root of 1320455115 is about 1097.0873676029.

Adding to 1320455115 its reverse (5115540231), we get a palindrome (6435995346).

The spelling of 1320455115 in words is "one billion, three hundred twenty million, four hundred fifty-five thousand, one hundred fifteen".