1982944487 has 2 divisors, whose sum is σ = 1982944488. Its totient is φ = 1982944486.

The previous prime is 1982944433. The next prime is 1982944489. The reversal of 1982944487 is 7844492891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1982944487 - 2²² = 1978750183 is a prime.

Together with 1982944489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982944489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991472243 + 991472244.

It is an arithmetic number, because the mean of its divisors is an integer number (991472244).

Almost surely, 2^1982944487 is an apocalyptic number.

1982944487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982944487 is an equidigital number, since it uses as much as digits as its factorization.

1982944487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 56.

The square root of 1982944487 is about 44530.2648431379. The cubic root of 1982944487 is about 1256.3293875493.

The spelling of 1982944487 in words is "one billion, nine hundred eighty-two million, nine hundred forty-four thousand, four hundred eighty-seven".