2089638887 has 4 divisors (see below), whose sum is σ = 2388158736. Its totient is φ = 1791119040.

The previous prime is 2089638883. The next prime is 2089638907. The reversal of 2089638887 is 7888369802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2089638887 - 2² = 2089638883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2089638883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149259914 + ... + 149259927.

It is an arithmetic number, because the mean of its divisors is an integer number (597039684).

Almost surely, 2^2089638887 is an apocalyptic number.

2089638887 is a deficient number, since it is larger than the sum of its proper divisors (298519849).

2089638887 is an equidigital number, since it uses as much as digits as its factorization.

2089638887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298519848.

The product of its (nonzero) digits is 9289728, while the sum is 59.

The square root of 2089638887 is about 45712.5681514395. The cubic root of 2089638887 is about 1278.4696242498.

The spelling of 2089638887 in words is "two billion, eighty-nine million, six hundred thirty-eight thousand, eight hundred eighty-seven".