1982095039381 has 2 divisors, whose sum is σ = 1982095039382. Its totient is φ = 1982095039380.

The previous prime is 1982095039369. The next prime is 1982095039481. The reversal of 1982095039381 is 1839305902891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1542400060356 + 439694979025 = 1241934^2 + 663095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982095039381 - 2¹¹ = 1982095037333 is a prime.

It is a super-2 number, since 2×1982095039381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982095039321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991047519690 + 991047519691.

It is an arithmetic number, because the mean of its divisors is an integer number (991047519691).

Almost surely, 2^{1982095039381} is an apocalyptic number.

It is an amenable number.

1982095039381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982095039381 is an equidigital number, since it uses as much as digits as its factorization.

1982095039381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 58.

The spelling of 1982095039381 in words is "one trillion, nine hundred eighty-two billion, ninety-five million, thirty-nine thousand, three hundred eighty-one".