1986805848 has 32 divisors (see below), whose sum is σ = 4968174960. Its totient is φ = 662113920.

The previous prime is 1986805819. The next prime is 1986805901. The reversal of 1986805848 is 8485086891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147058 + ... + 159998.

Almost surely, 2^1986805848 is an apocalyptic number.

It is an amenable number.

1986805848 is an abundant number, since it is smaller than the sum of its proper divisors (2981369112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1986805848 is a wasteful number, since it uses less digits than its factorization.

1986805848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19347 (or 19343 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 57.

The square root of 1986805848 is about 44573.6003481882. The cubic root of 1986805848 is about 1257.1443365439.

The spelling of 1986805848 in words is "one billion, nine hundred eighty-six million, eight hundred five thousand, eight hundred forty-eight".