1320664153 has 4 divisors (see below), whose sum is σ = 1320750900. Its totient is φ = 1320577408.

The previous prime is 1320664151. The next prime is 1320664157. The reversal of 1320664153 is 3514660231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3514660231 = 55949 ⋅62819.

It can be written as a sum of positive squares in 2 ways, for example, as 317801929 + 1002862224 = 17827^2 + 31668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320664153 - 2¹ = 1320664151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320664151) 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, 13828 + ... + 53221.

It is an arithmetic number, because the mean of its divisors is an integer number (330187725).

Almost surely, 2^1320664153 is an apocalyptic number.

It is an amenable number.

1320664153 is a deficient number, since it is larger than the sum of its proper divisors (86747).

1320664153 is an equidigital number, since it uses as much as digits as its factorization.

1320664153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86746.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1320664153 is about 36340.9432046005. The cubic root of 1320664153 is about 1097.1452569487.

The spelling of 1320664153 in words is "one billion, three hundred twenty million, six hundred sixty-four thousand, one hundred fifty-three".