2139475882 has 16 divisors (see below), whose sum is σ = 3223401480. Its totient is φ = 1065019648.

The previous prime is 2139475859. The next prime is 2139475883. The reversal of 2139475882 is 2885749312.

It can be written as a sum of positive squares in 4 ways, for example, as 1177793761 + 961682121 = 34319^2 + 31011^2 .

It is not an unprimeable number, because it can be changed into a prime (2139475883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477798 + ... + 482254.

Almost surely, 2^2139475882 is an apocalyptic number.

2139475882 is a deficient number, since it is larger than the sum of its proper divisors (1083925598).

2139475882 is a wasteful number, since it uses less digits than its factorization.

2139475882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465.

The product of its digits is 967680, while the sum is 49.

The square root of 2139475882 is about 46254.4687787029. The cubic root of 2139475882 is about 1288.5535300204.

The spelling of 2139475882 in words is "two billion, one hundred thirty-nine million, four hundred seventy-five thousand, eight hundred eighty-two".