1984728904271 has 8 divisors (see below), whose sum is σ = 2073436184064. Its totient is φ = 1897564359960.

The previous prime is 1984728904267. The next prime is 1984728904283. The reversal of 1984728904271 is 1724098274891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1984728904271 - 2² = 1984728904267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984728904201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385681241 + ... + 385686386.

It is an arithmetic number, because the mean of its divisors is an integer number (259179523008).

Almost surely, 2^{1984728904271} is an apocalyptic number.

1984728904271 is a deficient number, since it is larger than the sum of its proper divisors (88707279793).

1984728904271 is an equidigital number, since it uses as much as digits as its factorization.

1984728904271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771367741.

The product of its (nonzero) digits is 16257024, while the sum is 62.

The spelling of 1984728904271 in words is "one trillion, nine hundred eighty-four billion, seven hundred twenty-eight million, nine hundred four thousand, two hundred seventy-one".