1329241769 has 2 divisors, whose sum is σ = 1329241770. Its totient is φ = 1329241768.

The previous prime is 1329241723. The next prime is 1329241799. The reversal of 1329241769 is 9671429231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894727744 + 434514025 = 29912^2 + 20845^2 .

It is an emirp because it is prime and its reverse (9671429231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1329241769 - 2¹² = 1329237673 is a prime.

It is a super-2 number, since 2×1329241769² = 3533767360908498722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1329241799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664620884 + 664620885.

It is an arithmetic number, because the mean of its divisors is an integer number (664620885).

Almost surely, 2^1329241769 is an apocalyptic number.

It is an amenable number.

1329241769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329241769 is an equidigital number, since it uses as much as digits as its factorization.

1329241769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 1329241769 is about 36458.7680675033. The cubic root of 1329241769 is about 1099.5154254084.

The spelling of 1329241769 in words is "one billion, three hundred twenty-nine million, two hundred forty-one thousand, seven hundred sixty-nine".