1325986939 has 2 divisors, whose sum is σ = 1325986940. Its totient is φ = 1325986938.

The previous prime is 1325986931. The next prime is 1325986943. The reversal of 1325986939 is 9396895231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1325986939 - 2³ = 1325986931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1325986939.

It is not a weakly prime, because it can be changed into another prime (1325986931) 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, 662993469 + 662993470.

It is an arithmetic number, because the mean of its divisors is an integer number (662993470).

Almost surely, 2^1325986939 is an apocalyptic number.

1325986939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325986939 is an equidigital number, since it uses as much as digits as its factorization.

1325986939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 55.

The square root of 1325986939 is about 36414.1035726544. The cubic root of 1325986939 is about 1098.6172540189.

The spelling of 1325986939 in words is "one billion, three hundred twenty-five million, nine hundred eighty-six thousand, nine hundred thirty-nine".