1984772845 has 16 divisors (see below), whose sum is σ = 2602005120. Its totient is φ = 1441384000.

The previous prime is 1984772819. The next prime is 1984772869. The reversal of 1984772845 is 5482774891.

1984772845 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1984772845 - 2⁷ = 1984772717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12816 + ... + 64294.

It is an arithmetic number, because the mean of its divisors is an integer number (162625320).

Almost surely, 2^1984772845 is an apocalyptic number.

It is an amenable number.

1984772845 is a deficient number, since it is larger than the sum of its proper divisors (617232275).

1984772845 is a wasteful number, since it uses less digits than its factorization.

1984772845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52196.

The product of its digits is 4515840, while the sum is 55.

The square root of 1984772845 is about 44550.7894991772. The cubic root of 1984772845 is about 1256.7153983999.

The spelling of 1984772845 in words is "one billion, nine hundred eighty-four million, seven hundred seventy-two thousand, eight hundred forty-five".