2785900385 has 16 divisors (see below), whose sum is σ = 3437426496. Its totient is φ = 2165963328.

The previous prime is 2785900373. The next prime is 2785900391. The reversal of 2785900385 is 5830095872.

2785900385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2785900385 - 2¹⁴ = 2785884001 is a prime.

It is a super-2 number, since 2×2785900385² = 15522481910286296450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159494 + ... + 176096.

It is an arithmetic number, because the mean of its divisors is an integer number (214839156).

Almost surely, 2^2785900385 is an apocalyptic number.

It is an amenable number.

2785900385 is a deficient number, since it is larger than the sum of its proper divisors (651526111).

2785900385 is a wasteful number, since it uses less digits than its factorization.

2785900385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17552.

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 2785900385 is about 52781.6292378324. The cubic root of 2785900385 is about 1407.0899499267.

The spelling of 2785900385 in words is "two billion, seven hundred eighty-five million, nine hundred thousand, three hundred eighty-five".