2208947742 has 12 divisors (see below), whose sum is σ = 4786053480. Its totient is φ = 736315908.

The previous prime is 2208947731. The next prime is 2208947747. The reversal of 2208947742 is 2477498022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208947747) by changing a digit.

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, 61359642 + ... + 61359677.

It is an arithmetic number, because the mean of its divisors is an integer number (398837790).

Almost surely, 2^2208947742 is an apocalyptic number.

2208947742 is an abundant number, since it is smaller than the sum of its proper divisors (2577105738).

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

2208947742 is a wasteful number, since it uses less digits than its factorization.

2208947742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122719327 (or 122719324 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 2208947742 is about 46999.4440605418. Note that the first 3 decimals coincide. The cubic root of 2208947742 is about 1302.3522976524.

The spelling of 2208947742 in words is "two billion, two hundred eight million, nine hundred forty-seven thousand, seven hundred forty-two".