2208735138 has 8 divisors (see below), whose sum is σ = 4417470288. Its totient is φ = 736245044.

The previous prime is 2208735131. The next prime is 2208735143. The reversal of 2208735138 is 8315378022.

2208735138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2208735138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2208735096 and 2208735105.

It is not an unprimeable number, because it can be changed into a prime (2208735131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184061256 + ... + 184061267.

It is an arithmetic number, because the mean of its divisors is an integer number (552183786).

Almost surely, 2^2208735138 is an apocalyptic number.

2208735138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2208735138 is a wasteful number, since it uses less digits than its factorization.

2208735138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368122528.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 2208735138 is about 46997.1822346830. The cubic root of 2208735138 is about 1302.3105139279.

The spelling of 2208735138 in words is "two billion, two hundred eight million, seven hundred thirty-five thousand, one hundred thirty-eight".