1992213685764 has 27 divisors (see below), whose sum is σ = 5035894890663. Its totient is φ = 664068405672.

The previous prime is 1992213685727. The next prime is 1992213685769. The reversal of 1992213685764 is 4675863122991.

The square root of 1992213685764 is 1411458.

It is a perfect power (a square), and thus also a powerful number.

1992213685764 is a `hidden beast` number, since 1 + 9 + 9 + 2 + 21 + 36 + 8 + 576 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (1992213685769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8351127 + ... + 8586369.

Almost surely, 2^{1992213685764} is an apocalyptic number.

1992213685764 is the 1411458-th square number.

It is an amenable number.

1992213685764 is an abundant number, since it is smaller than the sum of its proper divisors (3043681204899).

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

1992213685764 is an frugal number, since it uses more digits than its factorization.

1992213685764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470496 (or 235248 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 1992213685764 in words is "one trillion, nine hundred ninety-two billion, two hundred thirteen million, six hundred eighty-five thousand, seven hundred sixty-four".