1982719054867 has 2 divisors, whose sum is σ = 1982719054868. Its totient is φ = 1982719054866.

The previous prime is 1982719054847. The next prime is 1982719054903. The reversal of 1982719054867 is 7684509172891.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1982719054867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1982719054847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991359527433 + 991359527434.

It is an arithmetic number, because the mean of its divisors is an integer number (991359527434).

Almost surely, 2^{1982719054867} is an apocalyptic number.

1982719054867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982719054867 is an equidigital number, since it uses as much as digits as its factorization.

1982719054867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60963840, while the sum is 67.

The spelling of 1982719054867 in words is "one trillion, nine hundred eighty-two billion, seven hundred nineteen million, fifty-four thousand, eight hundred sixty-seven".