1992666798 has 64 divisors (see below), whose sum is σ = 4696704000. Its totient is φ = 624074112.

The previous prime is 1992666757. The next prime is 1992666833. The reversal of 1992666798 is 8976662991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 658533 + ... + 661551.

It is an arithmetic number, because the mean of its divisors is an integer number (73386000).

Almost surely, 2^1992666798 is an apocalyptic number.

1992666798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992666798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2348352000).

1992666798 is an abundant number, since it is smaller than the sum of its proper divisors (2704037202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1992666798 is a wasteful number, since it uses less digits than its factorization.

1992666798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766 (or 3760 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The square root of 1992666798 is about 44639.2965670383. The cubic root of 1992666798 is about 1258.3792880877.

The spelling of 1992666798 in words is "one billion, nine hundred ninety-two million, six hundred sixty-six thousand, seven hundred ninety-eight".