1985127084 has 72 divisors (see below), whose sum is σ = 5130805680. Its totient is φ = 646918272.

The previous prime is 1985127073. The next prime is 1985127101. The reversal of 1985127084 is 4807215891.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 584062 + ... + 587450.

It is an arithmetic number, because the mean of its divisors is an integer number (71261190).

Almost surely, 2^1985127084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1985127084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2565402840).

1985127084 is an abundant number, since it is smaller than the sum of its proper divisors (3145678596).

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

1985127084 is a wasteful number, since it uses less digits than its factorization.

1985127084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759 (or 3754 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1985127084 is about 44554.7649976969. The cubic root of 1985127084 is about 1256.7901594530.

The spelling of 1985127084 in words is "one billion, nine hundred eighty-five million, one hundred twenty-seven thousand, eighty-four".