1979975359 has 2 divisors, whose sum is σ = 1979975360. Its totient is φ = 1979975358.

The previous prime is 1979975297. The next prime is 1979975369. The reversal of 1979975359 is 9535799791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1979975359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1979975359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979975369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989987679 + 989987680.

It is an arithmetic number, because the mean of its divisors is an integer number (989987680).

Almost surely, 2^1979975359 is an apocalyptic number.

1979975359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979975359 is an equidigital number, since it uses as much as digits as its factorization.

1979975359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24111675, while the sum is 64.

The square root of 1979975359 is about 44496.9140390657. The cubic root of 1979975359 is about 1255.7020265512.

The spelling of 1979975359 in words is "one billion, nine hundred seventy-nine million, nine hundred seventy-five thousand, three hundred fifty-nine".