208158147 has 8 divisors (see below), whose sum is σ = 308382480. Its totient is φ = 138772080.

The previous prime is 208158133. The next prime is 208158161. The reversal of 208158147 is 741851802.

208158147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (208158133) and next prime (208158161).

It is not a de Polignac number, because 208158147 - 2¹⁴ = 208141763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208158187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3854754 + ... + 3854807.

It is an arithmetic number, because the mean of its divisors is an integer number (38547810).

Almost surely, 2^208158147 is an apocalyptic number.

208158147 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

208158147 is a deficient number, since it is larger than the sum of its proper divisors (100224333).

208158147 is an equidigital number, since it uses as much as digits as its factorization.

208158147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709570 (or 7709564 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 208158147 is about 14427.6868208317. The cubic root of 208158147 is about 592.6493390585.

The spelling of 208158147 in words is "two hundred eight million, one hundred fifty-eight thousand, one hundred forty-seven".