2139539090 has 64 divisors (see below), whose sum is σ = 4429071360. Its totient is φ = 738097920.

The previous prime is 2139539081. The next prime is 2139539153. The reversal of 2139539090 is 909359312.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107717 + ... + 126023.

It is an arithmetic number, because the mean of its divisors is an integer number (69204240).

Almost surely, 2^2139539090 is an apocalyptic number.

2139539090 is an abundant number, since it is smaller than the sum of its proper divisors (2289532270).

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

2139539090 is a wasteful number, since it uses less digits than its factorization.

2139539090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18387.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 2139539090 is about 46255.1520373677. The cubic root of 2139539090 is about 1288.5662194349.

The spelling of 2139539090 in words is "two billion, one hundred thirty-nine million, five hundred thirty-nine thousand, ninety".