2947018049 has 4 divisors (see below), whose sum is σ = 3018896580. Its totient is φ = 2875139520.

The previous prime is 2947018033. The next prime is 2947018093. The reversal of 2947018049 is 9408107492.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110923024 + 2836095025 = 10532^2 + 53255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2947018049 - 2⁴ = 2947018033 is a prime.

It is a super-2 number, since 2×2947018049² = 17369830762263532802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2947018549) 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 3 ways as a sum of consecutive naturals, for example, 35939204 + ... + 35939285.

It is an arithmetic number, because the mean of its divisors is an integer number (754724145).

Almost surely, 2^2947018049 is an apocalyptic number.

It is an amenable number.

2947018049 is a deficient number, since it is larger than the sum of its proper divisors (71878531).

2947018049 is an equidigital number, since it uses as much as digits as its factorization.

2947018049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71878530.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2947018049 is about 54286.4444313679. Note that the first 4 decimals coincide. The cubic root of 2947018049 is about 1433.7087372142.

The spelling of 2947018049 in words is "two billion, nine hundred forty-seven million, eighteen thousand, forty-nine".