1836091836720 has 640 divisors, whose sum is σ = 6864040673280. Its totient is φ = 449355202560.

The previous prime is 1836091836713. The next prime is 1836091836739. The reversal of 1836091836720 is 276381906381.

1836091836720 is a `hidden beast` number, since 1 + 8 + 3 + 609 + 1 + 8 + 3 + 6 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 505669305 + ... + 505672935.

It is an arithmetic number, because the mean of its divisors is an integer number (10725063552).

Almost surely, 2^{1836091836720} is an apocalyptic number.

1836091836720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1836091836720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3432020336640).

1836091836720 is an abundant number, since it is smaller than the sum of its proper divisors (5027948836560).

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

1836091836720 is a wasteful number, since it uses less digits than its factorization.

1836091836720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4010 (or 3998 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 1836091836720 in words is "one trillion, eight hundred thirty-six billion, ninety-one million, eight hundred thirty-six thousand, seven hundred twenty".