1320373447 has 2 divisors, whose sum is σ = 1320373448. Its totient is φ = 1320373446.

The previous prime is 1320373433. The next prime is 1320373463. The reversal of 1320373447 is 7443730231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320373447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320371447) by changing a digit.

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 as a sum of consecutive naturals, namely, 660186723 + 660186724.

It is an arithmetic number, because the mean of its divisors is an integer number (660186724).

Almost surely, 2^1320373447 is an apocalyptic number.

1320373447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320373447 is an equidigital number, since it uses as much as digits as its factorization.

1320373447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 1320373447 is about 36336.9432809090. The cubic root of 1320373447 is about 1097.0647494471.

The spelling of 1320373447 in words is "one billion, three hundred twenty million, three hundred seventy-three thousand, four hundred forty-seven".