1326138607 has 2 divisors, whose sum is σ = 1326138608. Its totient is φ = 1326138606.

The previous prime is 1326138589. The next prime is 1326138631. The reversal of 1326138607 is 7068316231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1326138607 - 2²⁷ = 1191920879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1326138637) 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, 663069303 + 663069304.

It is an arithmetic number, because the mean of its divisors is an integer number (663069304).

Almost surely, 2^1326138607 is an apocalyptic number.

1326138607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326138607 is an equidigital number, since it uses as much as digits as its factorization.

1326138607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1326138607 is about 36416.1860578507. The cubic root of 1326138607 is about 1098.6591394815.

The spelling of 1326138607 in words is "one billion, three hundred twenty-six million, one hundred thirty-eight thousand, six hundred seven".