2139176671 has 4 divisors (see below), whose sum is σ = 2158107552. Its totient is φ = 2120245792.

The previous prime is 2139176639. The next prime is 2139176701. The reversal of 2139176671 is 1766719312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2139176671 - 2⁵ = 2139176639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139176371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9465271 + ... + 9465496.

It is an arithmetic number, because the mean of its divisors is an integer number (539526888).

Almost surely, 2^2139176671 is an apocalyptic number.

2139176671 is a deficient number, since it is larger than the sum of its proper divisors (18930881).

2139176671 is a wasteful number, since it uses less digits than its factorization.

2139176671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18930880.

The product of its digits is 95256, while the sum is 43.

The square root of 2139176671 is about 46251.2342646118. The cubic root of 2139176671 is about 1288.4934580859.

The spelling of 2139176671 in words is "two billion, one hundred thirty-nine million, one hundred seventy-six thousand, six hundred seventy-one".