2168839830 has 32 divisors (see below), whose sum is σ = 5206773600. Its totient is φ = 578184192.

The previous prime is 2168839807. The next prime is 2168839837. The reversal of 2168839830 is 389388612.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2168839830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168839837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115116 + ... + 132624.

It is an arithmetic number, because the mean of its divisors is an integer number (162711675).

Almost surely, 2^2168839830 is an apocalyptic number.

2168839830 is an abundant number, since it is smaller than the sum of its proper divisors (3037933770).

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

2168839830 is a wasteful number, since it uses less digits than its factorization.

2168839830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21648.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 2168839830 is about 46570.8044809192. The cubic root of 2168839830 is about 1294.4218246576.

The spelling of 2168839830 in words is "two billion, one hundred sixty-eight million, eight hundred thirty-nine thousand, eight hundred thirty".