1849165309728 has 384 divisors, whose sum is σ = 6274703232000. Its totient is φ = 523590635520.

The previous prime is 1849165309703. The next prime is 1849165309741. The reversal of 1849165309728 is 8279035619481.

1849165309728 is a `hidden beast` number, since 1 + 8 + 4 + 9 + 1 + 6 + 530 + 97 + 2 + 8 = 666.

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, 22416783 + ... + 22499121.

It is an arithmetic number, because the mean of its divisors is an integer number (16340373000).

It is a 1-persistent number, because it is pandigital, but 2⋅1849165309728 = 3698330619456 is not.

Almost surely, 2^{1849165309728} is an apocalyptic number.

1849165309728 is a gapful number since it is divisible by the number (18) 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 1849165309728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3137351616000).

1849165309728 is an abundant number, since it is smaller than the sum of its proper divisors (4425537922272).

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

1849165309728 is a wasteful number, since it uses less digits than its factorization.

1849165309728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82525 (or 82511 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 1849165309728 in words is "one trillion, eight hundred forty-nine billion, one hundred sixty-five million, three hundred nine thousand, seven hundred twenty-eight".