2139038532 has 36 divisors (see below), whose sum is σ = 5725075356. Its totient is φ = 671070720.

The previous prime is 2139038509. The next prime is 2139038543. The reversal of 2139038532 is 2358309312.

2139038532 is a `hidden beast` number, since 2 + 1 + 3 + 90 + 38 + 532 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1778646276 + 360392256 = 42174^2 + 18984^2 .

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 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 11 ways as a sum of consecutive naturals, for example, 1746969 + ... + 1748192.

It is an arithmetic number, because the mean of its divisors is an integer number (159029871).

Almost surely, 2^2139038532 is an apocalyptic number.

It is an amenable number.

2139038532 is an abundant number, since it is smaller than the sum of its proper divisors (3586036824).

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

2139038532 is a wasteful number, since it uses less digits than its factorization.

2139038532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495188 (or 3495183 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 2139038532 is about 46249.7408857606. The cubic root of 2139038532 is about 1288.4657223326.

The spelling of 2139038532 in words is "two billion, one hundred thirty-nine million, thirty-eight thousand, five hundred thirty-two".