208145147 has 16 divisors (see below), whose sum is σ = 249080832. Its totient is φ = 170063520.

The previous prime is 208145141. The next prime is 208145167. The reversal of 208145147 is 741541802.

It is a happy number.

208145147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 208145147 - 2⁶ = 208145083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208145141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47993 + ... + 52149.

It is an arithmetic number, because the mean of its divisors is an integer number (15567552).

Almost surely, 2^208145147 is an apocalyptic number.

208145147 is a deficient number, since it is larger than the sum of its proper divisors (40935685).

208145147 is a wasteful number, since it uses less digits than its factorization.

208145147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 208145147 is about 14427.2362911266. The cubic root of 208145147 is about 592.6370013209.

Adding to 208145147 its reverse (741541802), we get a palindrome (949686949).

The spelling of 208145147 in words is "two hundred eight million, one hundred forty-five thousand, one hundred forty-seven".