1985426882 has 8 divisors (see below), whose sum is σ = 3058630716. Its totient is φ = 965883312.

The previous prime is 1985426881. The next prime is 1985426887. The reversal of 1985426882 is 2886245891.

It can be written as a sum of positive squares in 2 ways, for example, as 1914850081 + 70576801 = 43759^2 + 8401^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1985426881) 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 in 3 ways as a sum of consecutive naturals, for example, 13414973 + ... + 13415120.

Almost surely, 2^1985426882 is an apocalyptic number.

1985426882 is a deficient number, since it is larger than the sum of its proper divisors (1073203834).

1985426882 is a wasteful number, since it uses less digits than its factorization.

1985426882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26830132.

The product of its digits is 2211840, while the sum is 53.

The square root of 1985426882 is about 44558.1292470858. The cubic root of 1985426882 is about 1256.8534239518.

The spelling of 1985426882 in words is "one billion, nine hundred eighty-five million, four hundred twenty-six thousand, eight hundred eighty-two".