2143638108 has 36 divisors (see below), whose sum is σ = 5619333720. Its totient is φ = 714545712.

The previous prime is 2143638089. The next prime is 2143638113. The reversal of 2143638108 is 8018363412.

2143638108 is a `hidden beast` number, since 2 + 1 + 4 + 3 + 638 + 10 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1101723 + ... + 1103666.

Almost surely, 2^2143638108 is an apocalyptic number.

It is an amenable number.

2143638108 is an abundant number, since it is smaller than the sum of its proper divisors (3475695612).

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

2143638108 is a wasteful number, since it uses less digits than its factorization.

2143638108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205408 (or 2205394 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 2143638108 is about 46299.4396078397. The cubic root of 2143638108 is about 1289.3885907378.

The spelling of 2143638108 in words is "two billion, one hundred forty-three million, six hundred thirty-eight thousand, one hundred eight".