1320648097 has 4 divisors (see below), whose sum is σ = 1320827716. Its totient is φ = 1320468480.

The previous prime is 1320648071. The next prime is 1320648103. The reversal of 1320648097 is 7908460231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 636250176 + 684397921 = 25224^2 + 26161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320648097 - 2²⁷ = 1186430369 is a prime.

It is a super-2 number, since 2×1320648097² = 3488222792219442818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320648697) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 78288 + ... + 93649.

It is an arithmetic number, because the mean of its divisors is an integer number (330206929).

Almost surely, 2^1320648097 is an apocalyptic number.

It is an amenable number.

1320648097 is a deficient number, since it is larger than the sum of its proper divisors (179619).

1320648097 is an equidigital number, since it uses as much as digits as its factorization.

1320648097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179618.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1320648097 is about 36340.7222960689. The cubic root of 1320648097 is about 1097.1408107425.

The spelling of 1320648097 in words is "one billion, three hundred twenty million, six hundred forty-eight thousand, ninety-seven".