1992566911 has 4 divisors (see below), whose sum is σ = 1995894000. Its totient is φ = 1989239824.

The previous prime is 1992566899. The next prime is 1992566963. The reversal of 1992566911 is 1196652991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1196652991 = 487 ⋅2457193.

It is a cyclic number.

It is not a de Polignac number, because 1992566911 - 2¹⁵ = 1992534143 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 (1992566711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662646 + ... + 1663843.

It is an arithmetic number, because the mean of its divisors is an integer number (498973500).

Almost surely, 2^1992566911 is an apocalyptic number.

1992566911 is a deficient number, since it is larger than the sum of its proper divisors (3327089).

1992566911 is an equidigital number, since it uses as much as digits as its factorization.

1992566911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327088.

The product of its digits is 262440, while the sum is 49.

The square root of 1992566911 is about 44638.1777293832. The cubic root of 1992566911 is about 1258.3582613524.

The spelling of 1992566911 in words is "one billion, nine hundred ninety-two million, five hundred sixty-six thousand, nine hundred eleven".