2089685385 has 20 divisors (see below), whose sum is σ = 3745955268. Its totient is φ = 1114498656.

The previous prime is 2089685359. The next prime is 2089685449. The reversal of 2089685385 is 5835869802.

2089685385 is a `hidden beast` number, since 20 + 89 + 6 + 8 + 538 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1056770064 + 1032915321 = 32508^2 + 32139^2 .

It is not a de Polignac number, because 2089685385 - 2¹³ = 2089677193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2579454 + ... + 2580263.

Almost surely, 2^2089685385 is an apocalyptic number.

It is an amenable number.

2089685385 is a deficient number, since it is larger than the sum of its proper divisors (1656269883).

2089685385 is an equidigital number, since it uses as much as digits as its factorization.

2089685385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159734 (or 5159725 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The square root of 2089685385 is about 45713.0767395939. The cubic root of 2089685385 is about 1278.4791068834.

The spelling of 2089685385 in words is "two billion, eighty-nine million, six hundred eighty-five thousand, three hundred eighty-five".