2089638420 has 96 divisors (see below), whose sum is σ = 5977722240. Its totient is φ = 545226240.

The previous prime is 2089638391. The next prime is 2089638427. The reversal of 2089638420 is 248369802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2089638427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1617975 + ... + 1619265.

It is an arithmetic number, because the mean of its divisors is an integer number (62267940).

Almost surely, 2^2089638420 is an apocalyptic number.

2089638420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2089638420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2988861120).

2089638420 is an abundant number, since it is smaller than the sum of its proper divisors (3888083820).

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

2089638420 is a wasteful number, since it uses less digits than its factorization.

2089638420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 2089638420 is about 45712.5630434348. The cubic root of 2089638420 is about 1278.4695290108.

The spelling of 2089638420 in words is "two billion, eighty-nine million, six hundred thirty-eight thousand, four hundred twenty".