2009985534 has 24 divisors (see below), whose sum is σ = 4505141160. Its totient is φ = 646891728.

The previous prime is 2009985529. The next prime is 2009985541. The reversal of 2009985534 is 4355899002.

2009985534 is a `hidden beast` number, since 2 + 0 + 0 + 9 + 98 + 553 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2009985534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1924752 + ... + 1925795.

It is an arithmetic number, because the mean of its divisors is an integer number (187714215).

Almost surely, 2^2009985534 is an apocalyptic number.

2009985534 is an abundant number, since it is smaller than the sum of its proper divisors (2495155626).

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

2009985534 is a wasteful number, since it uses less digits than its factorization.

2009985534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850584 (or 3850581 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 2009985534 is about 44832.8622106597. The cubic root of 2009985534 is about 1262.0144006266.

The spelling of 2009985534 in words is "two billion, nine million, nine hundred eighty-five thousand, five hundred thirty-four".