1836398178396 has 192 divisors, whose sum is σ = 5089903902720. Its totient is φ = 571613112000.

The previous prime is 1836398178379. The next prime is 1836398178401. The reversal of 1836398178396 is 6938718936381.

1836398178396 is a `hidden beast` number, since 1 + 8 + 3 + 63 + 9 + 8 + 178 + 396 = 666.

It is a super-2 number, since 2×1836398178396² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11090091 + ... + 11254461.

It is an arithmetic number, because the mean of its divisors is an integer number (26509916160).

Almost surely, 2^{1836398178396} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1836398178396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544951951360).

1836398178396 is an abundant number, since it is smaller than the sum of its proper divisors (3253505724324).

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

1836398178396 is a wasteful number, since it uses less digits than its factorization.

1836398178396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164533 (or 164525 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 72.

The spelling of 1836398178396 in words is "one trillion, eight hundred thirty-six billion, three hundred ninety-eight million, one hundred seventy-eight thousand, three hundred ninety-six".