208005288938 has 4 divisors (see below), whose sum is σ = 312007933410. Its totient is φ = 104002644468.

The previous prime is 208005288919. The next prime is 208005288973. The reversal of 208005288938 is 839882500802.

It is a happy number.

208005288938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 839882500802 = 2 ⋅419941250401.

It can be written as a sum of positive squares in only one way, i.e., 111841418329 + 96163870609 = 334427^2 + 310103^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 208005288938.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 52001322233 + ... + 52001322236.

Almost surely, 2^208005288938 is an apocalyptic number.

208005288938 is a deficient number, since it is larger than the sum of its proper divisors (104002644472).

208005288938 is a wasteful number, since it uses less digits than its factorization.

208005288938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104002644471.

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 208005288938 in words is "two hundred eight billion, five million, two hundred eighty-eight thousand, nine hundred thirty-eight".