1320129983 has 2 divisors, whose sum is σ = 1320129984. Its totient is φ = 1320129982.

The previous prime is 1320129973. The next prime is 1320129997. The reversal of 1320129983 is 3899210231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320129983 - 2¹⁰ = 1320128959 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320129913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660064991 + 660064992.

It is an arithmetic number, because the mean of its divisors is an integer number (660064992).

Almost surely, 2^1320129983 is an apocalyptic number.

1320129983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320129983 is an equidigital number, since it uses as much as digits as its factorization.

1320129983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1320129983 is about 36333.5930372981. The cubic root of 1320129983 is about 1096.9973159517.

The spelling of 1320129983 in words is "one billion, three hundred twenty million, one hundred twenty-nine thousand, nine hundred eighty-three".