1992781023337 has 4 divisors (see below), whose sum is σ = 2146071871300. Its totient is φ = 1839490175376.

The previous prime is 1992781023293. The next prime is 1992781023427. The reversal of 1992781023337 is 7333201872991.

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

It can be written as a sum of positive squares in 2 ways, for example, as 925080399721 + 1067700623616 = 961811^2 + 1033296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1992781023337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1992781024337) 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, 76645423962 + ... + 76645423987.

It is an arithmetic number, because the mean of its divisors is an integer number (536517967825).

Almost surely, 2^{1992781023337} is an apocalyptic number.

It is an amenable number.

1992781023337 is a deficient number, since it is larger than the sum of its proper divisors (153290847963).

1992781023337 is a wasteful number, since it uses less digits than its factorization.

1992781023337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153290847962.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 1992781023337 in words is "one trillion, nine hundred ninety-two billion, seven hundred eighty-one million, twenty-three thousand, three hundred thirty-seven".