1809690135792 has 80 divisors (see below), whose sum is σ = 5828612397312. Its totient is φ = 470049384960.

The previous prime is 1809690135787. The next prime is 1809690135829. The reversal of 1809690135792 is 2975310969081.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 244813693 + ... + 244821084.

Almost surely, 2^{1809690135792} is an apocalyptic number.

1809690135792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1809690135792 is an abundant number, since it is smaller than the sum of its proper divisors (4018922261520).

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

1809690135792 is a wasteful number, since it uses less digits than its factorization.

1809690135792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489634806 (or 489634800 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 60.

The spelling of 1809690135792 in words is "one trillion, eight hundred nine billion, six hundred ninety million, one hundred thirty-five thousand, seven hundred ninety-two".