1325986979 has 2 divisors, whose sum is σ = 1325986980. Its totient is φ = 1325986978.

The previous prime is 1325986957. The next prime is 1325987051. The reversal of 1325986979 is 9796895231.

It is a weak prime.

It is an emirp because it is prime and its reverse (9796895231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1325986979 - 2¹² = 1325982883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325986939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662993489 + 662993490.

It is an arithmetic number, because the mean of its divisors is an integer number (662993490).

Almost surely, 2^1325986979 is an apocalyptic number.

1325986979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325986979 is an equidigital number, since it uses as much as digits as its factorization.

1325986979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 59.

The square root of 1325986979 is about 36414.1041218921. The cubic root of 1325986979 is about 1098.6172650659.

The spelling of 1325986979 in words is "one billion, three hundred twenty-five million, nine hundred eighty-six thousand, nine hundred seventy-nine".