478150861 has 2 divisors, whose sum is σ = 478150862. Its totient is φ = 478150860.

The previous prime is 478150859. The next prime is 478150873. The reversal of 478150861 is 168051874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253000836 + 225150025 = 15906^2 + 15005^2 .

It is a cyclic number.

It is not a de Polignac number, because 478150861 - 2¹ = 478150859 is a prime.

Together with 478150859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478150801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239075430 + 239075431.

It is an arithmetic number, because the mean of its divisors is an integer number (239075431).

Almost surely, 2^478150861 is an apocalyptic number.

It is an amenable number.

478150861 is a deficient number, since it is larger than the sum of its proper divisors (1).

478150861 is an equidigital number, since it uses as much as digits as its factorization.

478150861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 478150861 is about 21866.6609476619. The cubic root of 478150861 is about 781.9667990213.

The spelling of 478150861 in words is "four hundred seventy-eight million, one hundred fifty thousand, eight hundred sixty-one".