2161850673 has 8 divisors (see below), whose sum is σ = 2914855200. Its totient is φ = 1425039968.

The previous prime is 2161850659. The next prime is 2161850699. The reversal of 2161850673 is 3760581612.

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

It is a cyclic number.

It is not a de Polignac number, because 2161850673 - 2²⁵ = 2128296241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2161850633) 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, 4048143 + ... + 4048676.

It is an arithmetic number, because the mean of its divisors is an integer number (364356900).

Almost surely, 2^2161850673 is an apocalyptic number.

It is an amenable number.

2161850673 is a deficient number, since it is larger than the sum of its proper divisors (753004527).

2161850673 is an equidigital number, since it uses as much as digits as its factorization.

2161850673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096911.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 2161850673 is about 46495.7059630242. The cubic root of 2161850673 is about 1293.0298895683.

The spelling of 2161850673 in words is "two billion, one hundred sixty-one million, eight hundred fifty thousand, six hundred seventy-three".