19982141 has 2 divisors, whose sum is σ = 19982142. Its totient is φ = 19982140.

The previous prime is 19982119. The next prime is 19982153. The reversal of 19982141 is 14128991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11256025 + 8726116 = 3355^2 + 2954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19982141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19982111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991070 + 9991071.

It is an arithmetic number, because the mean of its divisors is an integer number (9991071).

Almost surely, 2^19982141 is an apocalyptic number.

It is an amenable number.

19982141 is a deficient number, since it is larger than the sum of its proper divisors (1).

19982141 is an equidigital number, since it uses as much as digits as its factorization.

19982141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 35.

The square root of 19982141 is about 4470.1388121623. The cubic root of 19982141 is about 271.3609429587.

The spelling of 19982141 in words is "nineteen million, nine hundred eighty-two thousand, one hundred forty-one".