1992289249666 has 8 divisors (see below), whose sum is σ = 2996445762684. Its totient is φ = 993473995440.

The previous prime is 1992289249663. The next prime is 1992289249667. The reversal of 1992289249666 is 6669429822991.

It can be written as a sum of positive squares in 2 ways, for example, as 1866969709641 + 125319540025 = 1366371^2 + 354005^2 .

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

It is a super-2 number, since 2×1992289249666² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1992289249663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335313765 + ... + 1335315256.

Almost surely, 2^{1992289249666} is an apocalyptic number.

1992289249666 is a deficient number, since it is larger than the sum of its proper divisors (1004156513018).

1992289249666 is a wasteful number, since it uses less digits than its factorization.

1992289249666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670629396.

The product of its digits is 362797056, while the sum is 73.

The spelling of 1992289249666 in words is "one trillion, nine hundred ninety-two billion, two hundred eighty-nine million, two hundred forty-nine thousand, six hundred sixty-six".