1320490505 has 16 divisors (see below), whose sum is σ = 1613260800. Its totient is φ = 1037318400.

The previous prime is 1320490459. The next prime is 1320490517. The reversal of 1320490505 is 5050940231.

It is a de Polignac number, because none of the positive numbers 2^k-1320490505 is a prime.

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, 337601 + ... + 341489.

It is an arithmetic number, because the mean of its divisors is an integer number (100828800).

Almost surely, 2^1320490505 is an apocalyptic number.

It is an amenable number.

1320490505 is a deficient number, since it is larger than the sum of its proper divisors (292770295).

1320490505 is a wasteful number, since it uses less digits than its factorization.

1320490505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1320490505 is about 36338.5539750827. The cubic root of 1320490505 is about 1097.0971686618.

The spelling of 1320490505 in words is "one billion, three hundred twenty million, four hundred ninety thousand, five hundred five".