2188787085 has 24 divisors (see below), whose sum is σ = 3916283904. Its totient is φ = 1129695840.

The previous prime is 2188787071. The next prime is 2188787101. The reversal of 2188787085 is 5807878812.

2188787085 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2188787085 - 2⁵ = 2188787053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 783117 + ... + 785906.

It is an arithmetic number, because the mean of its divisors is an integer number (163178496).

Almost surely, 2^2188787085 is an apocalyptic number.

It is an amenable number.

2188787085 is a deficient number, since it is larger than the sum of its proper divisors (1727496819).

2188787085 is a wasteful number, since it uses less digits than its factorization.

2188787085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569065 (or 1569062 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 54.

The square root of 2188787085 is about 46784.4748287292. The cubic root of 2188787085 is about 1298.3780729274.

The spelling of 2188787085 in words is "two billion, one hundred eighty-eight million, seven hundred eighty-seven thousand, eighty-five".