1019992942808 has 64 divisors (see below), whose sum is σ = 2200558560000. Its totient is φ = 434171498112.

The previous prime is 1019992942783. The next prime is 1019992942823. The reversal of 1019992942808 is 8082492999101.

It is a happy number.

1019992942808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 1009947²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14103203 + ... + 14175341.

It is an arithmetic number, because the mean of its divisors is an integer number (34383727500).

Almost surely, 2^{1019992942808} is an apocalyptic number.

It is an amenable number.

1019992942808 is an abundant number, since it is smaller than the sum of its proper divisors (1180565617192).

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

1019992942808 is a wasteful number, since it uses less digits than its factorization.

1019992942808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73864 (or 73860 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 62.

The spelling of 1019992942808 in words is "one trillion, nineteen billion, nine hundred ninety-two million, nine hundred forty-two thousand, eight hundred eight".