208338137 has 4 divisors (see below), whose sum is σ = 238100736. Its totient is φ = 178575540.

The previous prime is 208338127. The next prime is 208338161. The reversal of 208338137 is 731833802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 208338137 - 2¹² = 208334041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208338097 and 208338106.

It is not an unprimeable number, because it can be changed into a prime (208338107) 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 3 ways as a sum of consecutive naturals, for example, 14881289 + ... + 14881302.

It is an arithmetic number, because the mean of its divisors is an integer number (59525184).

Almost surely, 2^208338137 is an apocalyptic number.

It is an amenable number.

208338137 is a deficient number, since it is larger than the sum of its proper divisors (29762599).

208338137 is an equidigital number, since it uses as much as digits as its factorization.

208338137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29762598.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 208338137 is about 14433.9231326760. The cubic root of 208338137 is about 592.8201070146.

The spelling of 208338137 in words is "two hundred eight million, three hundred thirty-eight thousand, one hundred thirty-seven".