2123161194 has 64 divisors (see below), whose sum is σ = 5572776960. Its totient is φ = 522443520.

The previous prime is 2123161177. The next prime is 2123161217. The reversal of 2123161194 is 4911613212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112159 + ... + 129714.

It is an arithmetic number, because the mean of its divisors is an integer number (87074640).

Almost surely, 2^2123161194 is an apocalyptic number.

2123161194 is an abundant number, since it is smaller than the sum of its proper divisors (3449615766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123161194 is a wasteful number, since it uses less digits than its factorization.

2123161194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241915.

The product of its digits is 2592, while the sum is 30.

The square root of 2123161194 is about 46077.7733185969. The cubic root of 2123161194 is about 1285.2698578826.

The spelling of 2123161194 in words is "two billion, one hundred twenty-three million, one hundred sixty-one thousand, one hundred ninety-four".