1836138665180 has 24 divisors (see below), whose sum is σ = 3856153392000. Its totient is φ = 734405524160.

The previous prime is 1836138665167. The next prime is 1836138665189. The reversal of 1836138665180 is 815668316381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836138665189) 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 7 ways as a sum of consecutive naturals, for example, 2819180 + ... + 3408819.

It is an arithmetic number, because the mean of its divisors is an integer number (160673058000).

Almost surely, 2^{1836138665180} is an apocalyptic number.

1836138665180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1836138665180 is an abundant number, since it is smaller than the sum of its proper divisors (2020014726820).

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

1836138665180 is a wasteful number, since it uses less digits than its factorization.

1836138665180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6242749 (or 6242747 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 1836138665180 in words is "one trillion, eight hundred thirty-six billion, one hundred thirty-eight million, six hundred sixty-five thousand, one hundred eighty".