2785523481 has 24 divisors (see below), whose sum is σ = 4561094720. Its totient is φ = 1623947616.

The previous prime is 2785523471. The next prime is 2785523483. The reversal of 2785523481 is 1843255872.

2785523481 is a `hidden beast` number, since 2 + 7 + 85 + 523 + 48 + 1 = 666.

2785523481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2785523481 - 2⁶ = 2785523417 is a prime.

It is a super-2 number, since 2×2785523481² = 15518282126404714722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2785523483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 624301 + ... + 628746.

Almost surely, 2^2785523481 is an apocalyptic number.

It is an amenable number.

2785523481 is a deficient number, since it is larger than the sum of its proper divisors (1775571239).

2785523481 is a wasteful number, since it uses less digits than its factorization.

2785523481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253085 (or 1253082 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 2785523481 is about 52778.0587081412. The cubic root of 2785523481 is about 1407.0264920764.

The spelling of 2785523481 in words is "two billion, seven hundred eighty-five million, five hundred twenty-three thousand, four hundred eighty-one".