19980368371 has 2 divisors, whose sum is σ = 19980368372. Its totient is φ = 19980368370.

The previous prime is 19980368321. The next prime is 19980368389. The reversal of 19980368371 is 17386308991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19980368371 - 2⁹ = 19980367859 is a prime.

It is not a weakly prime, because it can be changed into another prime (19980368321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9990184185 + 9990184186.

It is an arithmetic number, because the mean of its divisors is an integer number (9990184186).

Almost surely, 2^19980368371 is an apocalyptic number.

19980368371 is a deficient number, since it is larger than the sum of its proper divisors (1).

19980368371 is an equidigital number, since it uses as much as digits as its factorization.

19980368371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 19980368371 in words is "nineteen billion, nine hundred eighty million, three hundred sixty-eight thousand, three hundred seventy-one".