1992781023339 has 4 divisors (see below), whose sum is σ = 2657041364456. Its totient is φ = 1328520682224.

The previous prime is 1992781023293. The next prime is 1992781023427. The reversal of 1992781023339 is 9333201872991.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1992781023339 - 2¹¹ = 1992781021291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1992711023339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332130170554 + ... + 332130170559.

It is an arithmetic number, because the mean of its divisors is an integer number (664260341114).

Almost surely, 2^{1992781023339} is an apocalyptic number.

1992781023339 is a deficient number, since it is larger than the sum of its proper divisors (664260341117).

1992781023339 is an equidigital number, since it uses as much as digits as its factorization.

1992781023339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664260341116.

The product of its (nonzero) digits is 4408992, while the sum is 57.

The spelling of 1992781023339 in words is "one trillion, nine hundred ninety-two billion, seven hundred eighty-one million, twenty-three thousand, three hundred thirty-nine".