2864532861 has 24 divisors (see below), whose sum is σ = 4571536320. Its totient is φ = 1719206016.

The previous prime is 2864532841. The next prime is 2864532877. The reversal of 2864532861 is 1682354682.

2864532861 is a `hidden beast` number, since 286 + 45 + 328 + 6 + 1 = 666.

It is not a de Polignac number, because 2864532861 - 2¹⁰ = 2864531837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864532841) 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, 403491 + ... + 410528.

It is an arithmetic number, because the mean of its divisors is an integer number (190480680).

Almost surely, 2^2864532861 is an apocalyptic number.

It is an amenable number.

2864532861 is a deficient number, since it is larger than the sum of its proper divisors (1707003459).

2864532861 is a wasteful number, since it uses less digits than its factorization.

2864532861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814065 (or 814062 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 2864532861 is about 53521.3308971292. The cubic root of 2864532861 is about 1420.2057595444.

The spelling of 2864532861 in words is "two billion, eight hundred sixty-four million, five hundred thirty-two thousand, eight hundred sixty-one".