1326120869 has 2 divisors, whose sum is σ = 1326120870. Its totient is φ = 1326120868.

The previous prime is 1326120823. The next prime is 1326120899. The reversal of 1326120869 is 9680216231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1326052225 + 68644 = 36415^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326120869 - 2²⁴ = 1309343653 is a prime.

It is a super-2 number, since 2×1326120869² = 3517193118394630322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1326120899) 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 as a sum of consecutive naturals, namely, 663060434 + 663060435.

It is an arithmetic number, because the mean of its divisors is an integer number (663060435).

Almost surely, 2^1326120869 is an apocalyptic number.

It is an amenable number.

1326120869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326120869 is an equidigital number, since it uses as much as digits as its factorization.

1326120869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1326120869 is about 36415.9425114880. The cubic root of 1326120869 is about 1098.6542410235.

The spelling of 1326120869 in words is "one billion, three hundred twenty-six million, one hundred twenty thousand, eight hundred sixty-nine".