1992749836523 has 16 divisors (see below), whose sum is σ = 2116513087200. Its totient is φ = 1869720846336.

The previous prime is 1992749836513. The next prime is 1992749836537. The reversal of 1992749836523 is 3256389472991.

It is a cyclic number.

It is not a de Polignac number, because 1992749836523 - 2²⁴ = 1992733059307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1992749836513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8687636 + ... + 8914062.

It is an arithmetic number, because the mean of its divisors is an integer number (132282067950).

Almost surely, 2^{1992749836523} is an apocalyptic number.

1992749836523 is a deficient number, since it is larger than the sum of its proper divisors (123763250677).

1992749836523 is a wasteful number, since it uses less digits than its factorization.

1992749836523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228046.

The product of its digits is 176359680, while the sum is 68.

The spelling of 1992749836523 in words is "one trillion, nine hundred ninety-two billion, seven hundred forty-nine million, eight hundred thirty-six thousand, five hundred twenty-three".