1982427899 has 8 divisors (see below), whose sum is σ = 2044657728. Its totient is φ = 1921033600.

The previous prime is 1982427893. The next prime is 1982427911. The reversal of 1982427899 is 9987242891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1982427899 - 2⁴ = 1982427883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982427893) 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 in 7 ways as a sum of consecutive naturals, for example, 204062 + ... + 213555.

It is an arithmetic number, because the mean of its divisors is an integer number (255582216).

Almost surely, 2^1982427899 is an apocalyptic number.

1982427899 is a deficient number, since it is larger than the sum of its proper divisors (62229829).

1982427899 is a wasteful number, since it uses less digits than its factorization.

1982427899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417765.

The product of its digits is 5225472, while the sum is 59.

The square root of 1982427899 is about 44524.4640506767. The cubic root of 1982427899 is about 1256.2202802669.

The spelling of 1982427899 in words is "one billion, nine hundred eighty-two million, four hundred twenty-seven thousand, eight hundred ninety-nine".