2865032638 has 16 divisors (see below), whose sum is σ = 4735762416. Its totient is φ = 1291570560.

The previous prime is 2865032609. The next prime is 2865032647. The reversal of 2865032638 is 8362305682.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 2865032594 and 2865032603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280203 + ... + 1282438.

It is an arithmetic number, because the mean of its divisors is an integer number (295985151).

Almost surely, 2^2865032638 is an apocalyptic number.

2865032638 is a deficient number, since it is larger than the sum of its proper divisors (1870729778).

2865032638 is a wasteful number, since it uses less digits than its factorization.

2865032638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562699.

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 2865032638 is about 53525.9996450323. Note that the first 3 decimals coincide. The cubic root of 2865032638 is about 1420.2883494969.

The spelling of 2865032638 in words is "two billion, eight hundred sixty-five million, thirty-two thousand, six hundred thirty-eight".