2828745981 has 12 divisors (see below), whose sum is σ = 4086481152. Its totient is φ = 1885593096.

The previous prime is 2828745979. The next prime is 2828746031. The reversal of 2828745981 is 1895478282.

2828745981 is a `hidden beast` number, since 28 + 28 + 7 + 4 + 598 + 1 = 666.

It is not a de Polignac number, because 2828745981 - 2¹ = 2828745979 is a prime.

It is a super-2 number, since 2×2828745981² = 16003607650047304722, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2828745581) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 84580 + ... + 113186.

It is an arithmetic number, because the mean of its divisors is an integer number (340540096).

Almost surely, 2^2828745981 is an apocalyptic number.

It is an amenable number.

2828745981 is a deficient number, since it is larger than the sum of its proper divisors (1257735171).

2828745981 is a wasteful number, since it uses less digits than its factorization.

2828745981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39600 (or 39597 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 2828745981 is about 53185.9566145049. The cubic root of 2828745981 is about 1414.2667030852.

The spelling of 2828745981 in words is "two billion, eight hundred twenty-eight million, seven hundred forty-five thousand, nine hundred eighty-one".