2055538638 has 36 divisors (see below), whose sum is σ = 4602006864. Its totient is φ = 663071400.

The previous prime is 2055538621. The next prime is 2055538651. The reversal of 2055538638 is 8368355502.

2055538638 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 5 + 3 + 8 + 638 = 666.

2055538638 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2055538593 and 2055538602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 42118 + ... + 76713.

It is an arithmetic number, because the mean of its divisors is an integer number (127833524).

Almost surely, 2^2055538638 is an apocalyptic number.

2055538638 is an abundant number, since it is smaller than the sum of its proper divisors (2546468226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2055538638 is a wasteful number, since it uses less digits than its factorization.

2055538638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118901 (or 118867 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The square root of 2055538638 is about 45338.0484582210. The cubic root of 2055538638 is about 1271.4771161354.

The spelling of 2055538638 in words is "two billion, fifty-five million, five hundred thirty-eight thousand, six hundred thirty-eight".