2947945068 has 18 divisors (see below), whose sum is σ = 7451750124. Its totient is φ = 982648344.

The previous prime is 2947945043. The next prime is 2947945079. The reversal of 2947945068 is 8605497492.

2947945068 is a `hidden beast` number, since 2 + 9 + 47 + 94 + 506 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40943646 + ... + 40943717.

It is an arithmetic number, because the mean of its divisors is an integer number (413986118).

Almost surely, 2^2947945068 is an apocalyptic number.

It is an amenable number.

2947945068 is an abundant number, since it is smaller than the sum of its proper divisors (4503805056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2947945068 is a wasteful number, since it uses less digits than its factorization.

2947945068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81887373 (or 81887368 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The square root of 2947945068 is about 54294.9819780797. The cubic root of 2947945068 is about 1433.8590514057.

It can be divided in two parts, 29479 and 45068, that added together give a palindrome (74547).

The spelling of 2947945068 in words is "two billion, nine hundred forty-seven million, nine hundred forty-five thousand, sixty-eight".