2981784069 has 20 divisors (see below), whose sum is σ = 4859205120. Its totient is φ = 1807141320.

The previous prime is 2981784059. The next prime is 2981784097. The reversal of 2981784069 is 9604871892.

It is not a de Polignac number, because 2981784069 - 2⁸ = 2981783813 is a prime.

It is a super-2 number, since 2×2981784069² = 17782072468284393522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981784049) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1672389 + ... + 1674170.

It is an arithmetic number, because the mean of its divisors is an integer number (242960256).

Almost surely, 2^2981784069 is an apocalyptic number.

It is an amenable number.

2981784069 is a deficient number, since it is larger than the sum of its proper divisors (1877421051).

2981784069 is a wasteful number, since it uses less digits than its factorization.

2981784069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346582 (or 3346573 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 2981784069 is about 54605.7146185269. The cubic root of 2981784069 is about 1439.3245399827.

The spelling of 2981784069 in words is "two billion, nine hundred eighty-one million, seven hundred eighty-four thousand, sixty-nine".