1982801191387 has 2 divisors, whose sum is σ = 1982801191388. Its totient is φ = 1982801191386.

The previous prime is 1982801191361. The next prime is 1982801191409. The reversal of 1982801191387 is 7831911082891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1982801191387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1982801191087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991400595693 + 991400595694.

It is an arithmetic number, because the mean of its divisors is an integer number (991400595694).

Almost surely, 2^{1982801191387} is an apocalyptic number.

1982801191387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982801191387 is an equidigital number, since it uses as much as digits as its factorization.

1982801191387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 58.

The spelling of 1982801191387 in words is "one trillion, nine hundred eighty-two billion, eight hundred one million, one hundred ninety-one thousand, three hundred eighty-seven".