2139017867 has 16 divisors (see below), whose sum is σ = 2465510400. Its totient is φ = 1817811072.

The previous prime is 2139017857. The next prime is 2139017869. The reversal of 2139017867 is 7687109312.

It is not a de Polignac number, because 2139017867 - 2¹⁶ = 2138952331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139017869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526259 + ... + 530307.

It is an arithmetic number, because the mean of its divisors is an integer number (154094400).

Almost surely, 2^2139017867 is an apocalyptic number.

2139017867 is a deficient number, since it is larger than the sum of its proper divisors (326492533).

2139017867 is a wasteful number, since it uses less digits than its factorization.

2139017867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4682.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 2139017867 is about 46249.5174785640. The cubic root of 2139017867 is about 1288.4615730805.

The spelling of 2139017867 in words is "two billion, one hundred thirty-nine million, seventeen thousand, eight hundred sixty-seven".