1326065138 has 32 divisors (see below), whose sum is σ = 2188771200. Its totient is φ = 599740416.

The previous prime is 1326065137. The next prime is 1326065149. The reversal of 1326065138 is 8315606231.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1326065098 and 1326065107.

It is not an unprimeable number, because it can be changed into a prime (1326065131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671120 + ... + 673092.

It is an arithmetic number, because the mean of its divisors is an integer number (68399100).

Almost surely, 2^1326065138 is an apocalyptic number.

1326065138 is a deficient number, since it is larger than the sum of its proper divisors (862706062).

1326065138 is a wasteful number, since it uses less digits than its factorization.

1326065138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1326065138 is about 36415.1773028774. The cubic root of 1326065138 is about 1098.6388502803.

The spelling of 1326065138 in words is "one billion, three hundred twenty-six million, sixty-five thousand, one hundred thirty-eight".