2158881922 has 8 divisors (see below), whose sum is σ = 3240234000. Its totient is φ = 1078803924.

The previous prime is 2158881919. The next prime is 2158881929. The reversal of 2158881922 is 2291888512.

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

It is not an unprimeable number, because it can be changed into a prime (2158881929) by changing a digit.

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, 314272 + ... + 321067.

It is an arithmetic number, because the mean of its divisors is an integer number (405029250).

Almost surely, 2^2158881922 is an apocalyptic number.

2158881922 is a deficient number, since it is larger than the sum of its proper divisors (1081352078).

2158881922 is a wasteful number, since it uses less digits than its factorization.

2158881922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637040.

The product of its digits is 184320, while the sum is 46.

The square root of 2158881922 is about 46463.7699934045. The cubic root of 2158881922 is about 1292.4377360770.

The spelling of 2158881922 in words is "two billion, one hundred fifty-eight million, eight hundred eighty-one thousand, nine hundred twenty-two".