1836868025520 has 480 divisors, whose sum is σ = 6803987374080. Its totient is φ = 440402780160.

The previous prime is 1836868025477. The next prime is 1836868025539. The reversal of 1836868025520 is 255208686381.

1836868025520 is a `hidden beast` number, since 1 + 8 + 3 + 6 + 8 + 6 + 80 + 2 + 552 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 338965371 + ... + 338970789.

It is an arithmetic number, because the mean of its divisors is an integer number (14174973696).

Almost surely, 2^{1836868025520} is an apocalyptic number.

1836868025520 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 1836868025520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3401993687040).

1836868025520 is an abundant number, since it is smaller than the sum of its proper divisors (4967119348560).

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

1836868025520 is a wasteful number, since it uses less digits than its factorization.

1836868025520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5913 (or 5904 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 1836868025520 in words is "one trillion, eight hundred thirty-six billion, eight hundred sixty-eight million, twenty-five thousand, five hundred twenty".