2159171079 has 8 divisors (see below), whose sum is σ = 3100348272. Its totient is φ = 1328720640.

The previous prime is 2159171059. The next prime is 2159171087. The reversal of 2159171079 is 9701719512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2159171079 - 2¹² = 2159166983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2159171079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159171009) 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, 27681642 + ... + 27681719.

It is an arithmetic number, because the mean of its divisors is an integer number (387543534).

Almost surely, 2^2159171079 is an apocalyptic number.

2159171079 is a deficient number, since it is larger than the sum of its proper divisors (941177193).

2159171079 is a wasteful number, since it uses less digits than its factorization.

2159171079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55363377.

The product of its (nonzero) digits is 39690, while the sum is 42.

The square root of 2159171079 is about 46466.8815286759. The cubic root of 2159171079 is about 1292.4954358105.

The spelling of 2159171079 in words is "two billion, one hundred fifty-nine million, one hundred seventy-one thousand, seventy-nine".