2009831658 has 32 divisors (see below), whose sum is σ = 4066250496. Its totient is φ = 662197248.

The previous prime is 2009831657. The next prime is 2009831741. The reversal of 2009831658 is 8561389002.

It is not an unprimeable number, because it can be changed into a prime (2009831651) 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 15 ways as a sum of consecutive naturals, for example, 599535 + ... + 602877.

It is an arithmetic number, because the mean of its divisors is an integer number (127070328).

Almost surely, 2^2009831658 is an apocalyptic number.

2009831658 is an abundant number, since it is smaller than the sum of its proper divisors (2056418838).

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

2009831658 is a wasteful number, since it uses less digits than its factorization.

2009831658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 2009831658 is about 44831.1460705613. The cubic root of 2009831658 is about 1261.9821949747.

The spelling of 2009831658 in words is "two billion, nine million, eight hundred thirty-one thousand, six hundred fifty-eight".