2161850671 has 16 divisors (see below), whose sum is σ = 2249786880. Its totient is φ = 2075804640.

The previous prime is 2161850659. The next prime is 2161850699. The reversal of 2161850671 is 1760581612.

2161850671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2161850671 - 2¹³ = 2161842479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2161850671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161850651) 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, 1339461 + ... + 1341073.

It is an arithmetic number, because the mean of its divisors is an integer number (140611680).

Almost surely, 2^2161850671 is an apocalyptic number.

2161850671 is a deficient number, since it is larger than the sum of its proper divisors (87936209).

2161850671 is a wasteful number, since it uses less digits than its factorization.

2161850671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 2161850671 is about 46495.7059415168. The cubic root of 2161850671 is about 1293.0298891695.

The spelling of 2161850671 in words is "two billion, one hundred sixty-one million, eight hundred fifty thousand, six hundred seventy-one".