1992670044390 has 24 divisors (see below), whose sum is σ = 5180942115648. Its totient is φ = 531378678480.

The previous prime is 1992670044347. The next prime is 1992670044397. The reversal of 1992670044390 is 934400762991.

1992670044390 is a `hidden beast` number, since 1 + 99 + 26 + 7 + 0 + 0 + 443 + 90 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992670044397) 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, 11070389046 + ... + 11070389225.

It is an arithmetic number, because the mean of its divisors is an integer number (215872588152).

Almost surely, 2^{1992670044390} is an apocalyptic number.

1992670044390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1992670044390 is an abundant number, since it is smaller than the sum of its proper divisors (3188272071258).

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

1992670044390 is a wasteful number, since it uses less digits than its factorization.

1992670044390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22140778284 (or 22140778281 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 1992670044390 in words is "one trillion, nine hundred ninety-two billion, six hundred seventy million, forty-four thousand, three hundred ninety".