1992781023338 has 16 divisors (see below), whose sum is σ = 3417270054144. Its totient is φ = 853780506480.

The previous prime is 1992781023293. The next prime is 1992781023427. The reversal of 1992781023338 is 8333201872991.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22329170 + ... + 22418237.

It is an arithmetic number, because the mean of its divisors is an integer number (213579378384).

Almost surely, 2^{1992781023338} is an apocalyptic number.

1992781023338 is a deficient number, since it is larger than the sum of its proper divisors (1424489030806).

1992781023338 is a wasteful number, since it uses less digits than its factorization.

1992781023338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44750597.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 1992781023338 in words is "one trillion, nine hundred ninety-two billion, seven hundred eighty-one million, twenty-three thousand, three hundred thirty-eight".