1982976950281 has 2 divisors, whose sum is σ = 1982976950282. Its totient is φ = 1982976950280.

The previous prime is 1982976950263. The next prime is 1982976950323. The reversal of 1982976950281 is 1820596792891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1172652917881 + 810324032400 = 1082891^2 + 900180^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982976950281 - 2⁹ = 1982976949769 is a prime.

It is a super-2 number, since 2×1982976950281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1982976956281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991488475140 + 991488475141.

It is an arithmetic number, because the mean of its divisors is an integer number (991488475141).

Almost surely, 2^{1982976950281} is an apocalyptic number.

It is an amenable number.

1982976950281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982976950281 is an equidigital number, since it uses as much as digits as its factorization.

1982976950281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39191040, while the sum is 67.

The spelling of 1982976950281 in words is "one trillion, nine hundred eighty-two billion, nine hundred seventy-six million, nine hundred fifty thousand, two hundred eighty-one".