2161231934 has 8 divisors (see below), whose sum is σ = 3320917488. Its totient is φ = 1054259440.

The previous prime is 2161231907. The next prime is 2161231951. The reversal of 2161231934 is 4391321612.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2161231934.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13178162 + ... + 13178325.

It is an arithmetic number, because the mean of its divisors is an integer number (415114686).

Almost surely, 2^2161231934 is an apocalyptic number.

2161231934 is a deficient number, since it is larger than the sum of its proper divisors (1159685554).

2161231934 is a wasteful number, since it uses less digits than its factorization.

2161231934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26356530.

The product of its digits is 7776, while the sum is 32.

The square root of 2161231934 is about 46489.0517649048. The cubic root of 2161231934 is about 1292.9065192896.

The spelling of 2161231934 in words is "two billion, one hundred sixty-one million, two hundred thirty-one thousand, nine hundred thirty-four".