1992068221 has 32 divisors (see below), whose sum is σ = 2381823360. Its totient is φ = 1642291200.

The previous prime is 1992068209. The next prime is 1992068227. The reversal of 1992068221 is 1228602991.

It is not a de Polignac number, because 1992068221 - 2⁷ = 1992068093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992068227) by changing a digit.

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, 2455906 + ... + 2456716.

It is an arithmetic number, because the mean of its divisors is an integer number (74431980).

Almost surely, 2^1992068221 is an apocalyptic number.

1992068221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1992068221 is a deficient number, since it is larger than the sum of its proper divisors (389755139).

1992068221 is a wasteful number, since it uses less digits than its factorization.

1992068221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1992068221 is about 44632.5914663265. The cubic root of 1992068221 is about 1258.2532739888.

The spelling of 1992068221 in words is "one billion, nine hundred ninety-two million, sixty-eight thousand, two hundred twenty-one".