478208207149 has 4 divisors (see below), whose sum is σ = 483138188764. Its totient is φ = 473278225536.

The previous prime is 478208207137. The next prime is 478208207153. The reversal of 478208207149 is 941702802874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 375707702500 + 102500504649 = 612950^2 + 320157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478208207149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478208207096 and 478208207105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478208207549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2464990662 + ... + 2464990855.

It is an arithmetic number, because the mean of its divisors is an integer number (120784547191).

Almost surely, 2^478208207149 is an apocalyptic number.

It is an amenable number.

478208207149 is a deficient number, since it is larger than the sum of its proper divisors (4929981615).

478208207149 is an equidigital number, since it uses as much as digits as its factorization.

478208207149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929981614.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 478208207149 in words is "four hundred seventy-eight billion, two hundred eight million, two hundred seven thousand, one hundred forty-nine".