1980659339 has 2 divisors, whose sum is σ = 1980659340. Its totient is φ = 1980659338.

The previous prime is 1980659333. The next prime is 1980659407. The reversal of 1980659339 is 9339560891.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1980659339 is a prime.

It is a super-2 number, since 2×1980659339² = 7846022834335833842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1980659333) 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, 990329669 + 990329670.

It is an arithmetic number, because the mean of its divisors is an integer number (990329670).

Almost surely, 2^1980659339 is an apocalyptic number.

1980659339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980659339 is an equidigital number, since it uses as much as digits as its factorization.

1980659339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The square root of 1980659339 is about 44504.5990769493. The cubic root of 1980659339 is about 1255.8466034670.

The spelling of 1980659339 in words is "one billion, nine hundred eighty million, six hundred fifty-nine thousand, three hundred thirty-nine".