1980081319 has 2 divisors, whose sum is σ = 1980081320. Its totient is φ = 1980081318.

The previous prime is 1980081287. The next prime is 1980081349. The reversal of 1980081319 is 9131800891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1980081319 - 2⁵ = 1980081287 is a prime.

It is a super-2 number, since 2×1980081319² = 7841444059705559522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1980081349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990040659 + 990040660.

It is an arithmetic number, because the mean of its divisors is an integer number (990040660).

Almost surely, 2^1980081319 is an apocalyptic number.

1980081319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980081319 is an equidigital number, since it uses as much as digits as its factorization.

1980081319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 40.

The square root of 1980081319 is about 44498.1046675024. The cubic root of 1980081319 is about 1255.7244261252.

The spelling of 1980081319 in words is "one billion, nine hundred eighty million, eighty-one thousand, three hundred nineteen".