1982539679 has 2 divisors, whose sum is σ = 1982539680. Its totient is φ = 1982539678.

The previous prime is 1982539649. The next prime is 1982539693. The reversal of 1982539679 is 9769352891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1982539679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982539619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991269839 + 991269840.

It is an arithmetic number, because the mean of its divisors is an integer number (991269840).

Almost surely, 2^1982539679 is an apocalyptic number.

1982539679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982539679 is an equidigital number, since it uses as much as digits as its factorization.

1982539679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 59.

The square root of 1982539679 is about 44525.7192979518. The cubic root of 1982539679 is about 1256.2438906529.

The spelling of 1982539679 in words is "one billion, nine hundred eighty-two million, five hundred thirty-nine thousand, six hundred seventy-nine".