208118147 has 8 divisors (see below), whose sum is σ = 211512912. Its totient is φ = 204732000.

The previous prime is 208118143. The next prime is 208118149. The reversal of 208118147 is 741811802.

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

It is a cyclic number.

It is not a de Polignac number, because 208118147 - 2² = 208118143 is a prime.

It is a super-2 number, since 2×208118147² = 86626326221427218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208118143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61397 + ... + 64697.

It is an arithmetic number, because the mean of its divisors is an integer number (26439114).

Almost surely, 2^208118147 is an apocalyptic number.

208118147 is a deficient number, since it is larger than the sum of its proper divisors (3394765).

208118147 is an equidigital number, since it uses as much as digits as its factorization.

208118147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 208118147 is about 14426.3005306281. The cubic root of 208118147 is about 592.6113751474.

Adding to 208118147 its reverse (741811802), we get a palindrome (949929949).

The spelling of 208118147 in words is "two hundred eight million, one hundred eighteen thousand, one hundred forty-seven".