1982001979 has 2 divisors, whose sum is σ = 1982001980. Its totient is φ = 1982001978.

The previous prime is 1982001961. The next prime is 1982001997. The reversal of 1982001979 is 9791002891.

It is a happy number.

Together with next prime (1982001997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (1982001961) and next prime (1982001997).

It is a cyclic number.

It is not a de Polignac number, because 1982001979 - 2¹³ = 1981993787 is a prime.

It is not a weakly prime, because it can be changed into another prime (1982001949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991000989 + 991000990.

It is an arithmetic number, because the mean of its divisors is an integer number (991000990).

Almost surely, 2^1982001979 is an apocalyptic number.

1982001979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982001979 is an equidigital number, since it uses as much as digits as its factorization.

1982001979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 46.

The square root of 1982001979 is about 44519.6808052349. The cubic root of 1982001979 is about 1256.1303084929.

The spelling of 1982001979 in words is "one billion, nine hundred eighty-two million, one thousand, nine hundred seventy-nine".