1982371 has 2 divisors, whose sum is σ = 1982372. Its totient is φ = 1982370.

The previous prime is 1982293. The next prime is 1982381. The reversal of 1982371 is 1732891.

It is a strong prime.

It is an emirp because it is prime and its reverse (1732891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1982371 - 2¹⁷ = 1851299 is a prime.

It is a Chen prime.

1982371 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1982381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991185 + 991186.

It is an arithmetic number, because the mean of its divisors is an integer number (991186).

2^1982371 is an apocalyptic number.

1982371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982371 is an equidigital number, since it uses as much as digits as its factorization.

1982371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 31.

The square root of 1982371 is about 1407.9669740445. The cubic root of 1982371 is about 125.6208261610.

The spelling of 1982371 in words is "one million, nine hundred eighty-two thousand, three hundred seventy-one".