1992257123994 has 24 divisors (see below), whose sum is σ = 4316638046292. Its totient is φ = 664073255040.

The previous prime is 1992257123971. The next prime is 1992257123999. The reversal of 1992257123994 is 4993217522991.

1992257123994 is a `hidden beast` number, since 1 + 9 + 9 + 22 + 571 + 2 + 39 + 9 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1365539484969 + 626717639025 = 1168563^2 + 791655^2 .

It is not an unprimeable number, because it can be changed into a prime (1992257123999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24447 + ... + 1996274.

Almost surely, 2^{1992257123994} is an apocalyptic number.

1992257123994 is an abundant number, since it is smaller than the sum of its proper divisors (2324380922298).

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

1992257123994 is a wasteful number, since it uses less digits than its factorization.

1992257123994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075502 (or 2075499 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The spelling of 1992257123994 in words is "one trillion, nine hundred ninety-two billion, two hundred fifty-seven million, one hundred twenty-three thousand, nine hundred ninety-four".