1329701993 has 2 divisors, whose sum is σ = 1329701994. Its totient is φ = 1329701992.

The previous prime is 1329701983. The next prime is 1329702043. The reversal of 1329701993 is 3991079231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 696273769 + 633428224 = 26387^2 + 25168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329701993 - 2¹⁰ = 1329700969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1329701983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664850996 + 664850997.

It is an arithmetic number, because the mean of its divisors is an integer number (664850997).

Almost surely, 2^1329701993 is an apocalyptic number.

It is an amenable number.

1329701993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329701993 is an equidigital number, since it uses as much as digits as its factorization.

1329701993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 1329701993 is about 36465.0790894521. The cubic root of 1329701993 is about 1099.6423060130.

The spelling of 1329701993 in words is "one billion, three hundred twenty-nine million, seven hundred one thousand, nine hundred ninety-three".