205148807 has 2 divisors, whose sum is σ = 205148808. Its totient is φ = 205148806.

The previous prime is 205148803. The next prime is 205148837. The reversal of 205148807 is 708841502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205148807 - 2² = 205148803 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205148803) 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 as a sum of consecutive naturals, namely, 102574403 + 102574404.

It is an arithmetic number, because the mean of its divisors is an integer number (102574404).

Almost surely, 2^205148807 is an apocalyptic number.

205148807 is a deficient number, since it is larger than the sum of its proper divisors (1).

205148807 is an equidigital number, since it uses as much as digits as its factorization.

205148807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 205148807 is about 14323.0166864386. The cubic root of 205148807 is about 589.7794895573.

The spelling of 205148807 in words is "two hundred five million, one hundred forty-eight thousand, eight hundred seven".