1825791487920 has 160 divisors (see below), whose sum is σ = 6289312458240. Its totient is φ = 486840948480.

The previous prime is 1825791487873. The next prime is 1825791487921. The reversal of 1825791487920 is 297841975281.

1825791487920 is a `hidden beast` number, since 1 + 82 + 5 + 79 + 1 + 487 + 9 + 2 + 0 = 666.

It is a super-4 number, since 4×1825791487920⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1825791487921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40436397 + ... + 40481523.

It is an arithmetic number, because the mean of its divisors is an integer number (39308202864).

Almost surely, 2^{1825791487920} is an apocalyptic number.

1825791487920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1825791487920 is an abundant number, since it is smaller than the sum of its proper divisors (4463520970320).

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

1825791487920 is a wasteful number, since it uses less digits than its factorization.

1825791487920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63880 (or 63868 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 63.

The spelling of 1825791487920 in words is "one trillion, eight hundred twenty-five billion, seven hundred ninety-one million, four hundred eighty-seven thousand, nine hundred twenty".