2161877846 has 16 divisors (see below), whose sum is σ = 3262187520. Its totient is φ = 1074498600.

The previous prime is 2161877827. The next prime is 2161877849. The reversal of 2161877846 is 6487781612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2161877794 and 2161877803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161877849) 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, 286421 + ... + 293871.

It is an arithmetic number, because the mean of its divisors is an integer number (203886720).

Almost surely, 2^2161877846 is an apocalyptic number.

2161877846 is a deficient number, since it is larger than the sum of its proper divisors (1100309674).

2161877846 is a wasteful number, since it uses less digits than its factorization.

2161877846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8299.

The product of its digits is 903168, while the sum is 50.

The square root of 2161877846 is about 46495.9981718857. The cubic root of 2161877846 is about 1293.0353070491.

The spelling of 2161877846 in words is "two billion, one hundred sixty-one million, eight hundred seventy-seven thousand, eight hundred forty-six".