1992222281 has 8 divisors (see below), whose sum is σ = 2277428160. Its totient is φ = 1707167088.

The previous prime is 1992222269. The next prime is 1992222283. The reversal of 1992222281 is 1822222991.

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

It is a cyclic number.

It is not a de Polignac number, because 1992222281 - 2¹⁸ = 1991960137 is a prime.

It is a super-2 number, since 2×1992222281² = 7937899233825685922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1992222283) 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 7 ways as a sum of consecutive naturals, for example, 7751 + ... + 63596.

It is an arithmetic number, because the mean of its divisors is an integer number (284678520).

Almost surely, 2^1992222281 is an apocalyptic number.

It is an amenable number.

1992222281 is a deficient number, since it is larger than the sum of its proper divisors (285205879).

1992222281 is an equidigital number, since it uses as much as digits as its factorization.

1992222281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75343.

The product of its digits is 20736, while the sum is 38.

The square root of 1992222281 is about 44634.3173018251. The cubic root of 1992222281 is about 1258.2857095417.

The spelling of 1992222281 in words is "one billion, nine hundred ninety-two million, two hundred twenty-two thousand, two hundred eighty-one".