2139628005 has 24 divisors (see below), whose sum is σ = 3710230368. Its totient is φ = 1140660576.

The previous prime is 2139627989. The next prime is 2139628039. The reversal of 2139628005 is 5008269312.

2139628005 is a `hidden beast` number, since 21 + 3 + 9 + 628 + 0 + 0 + 5 = 666.

2139628005 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2139628005 - 2⁴ = 2139627989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117654 + ... + 134616.

It is an arithmetic number, because the mean of its divisors is an integer number (154592932).

Almost surely, 2^2139628005 is an apocalyptic number.

It is an amenable number.

2139628005 is a deficient number, since it is larger than the sum of its proper divisors (1570602363).

2139628005 is a wasteful number, since it uses less digits than its factorization.

2139628005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19777 (or 19774 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2139628005 is about 46256.1131635593. The cubic root of 2139628005 is about 1288.5840692729.

The spelling of 2139628005 in words is "two billion, one hundred thirty-nine million, six hundred twenty-eight thousand, five".