2745861831 has 12 divisors (see below), whose sum is σ = 4138690608. Its totient is φ = 1750984224.

The previous prime is 2745861823. The next prime is 2745861863. The reversal of 2745861831 is 1381685472.

2745861831 is a `hidden beast` number, since 27 + 4 + 5 + 8 + 618 + 3 + 1 = 666.

2745861831 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 2745861831 - 2³ = 2745861823 is a prime.

It is a super-2 number, since 2×2745861831² = 15079514389885345122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745861331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6632310 + ... + 6632723.

It is an arithmetic number, because the mean of its divisors is an integer number (344890884).

Almost surely, 2^2745861831 is an apocalyptic number.

2745861831 is a deficient number, since it is larger than the sum of its proper divisors (1392828777).

2745861831 is a wasteful number, since it uses less digits than its factorization.

2745861831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13265062 (or 13265059 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 2745861831 is about 52400.9716608385. The cubic root of 2745861831 is about 1400.3165663382.

The spelling of 2745861831 in words is "two billion, seven hundred forty-five million, eight hundred sixty-one thousand, eight hundred thirty-one".