478218707 has 2 divisors, whose sum is σ = 478218708. Its totient is φ = 478218706.

The previous prime is 478218701. The next prime is 478218709. The reversal of 478218707 is 707812874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478218707 - 2¹⁰ = 478217683 is a prime.

Together with 478218709, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (478218701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239109353 + 239109354.

It is an arithmetic number, because the mean of its divisors is an integer number (239109354).

Almost surely, 2^478218707 is an apocalyptic number.

478218707 is a deficient number, since it is larger than the sum of its proper divisors (1).

478218707 is an equidigital number, since it uses as much as digits as its factorization.

478218707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 175616, while the sum is 44.

The square root of 478218707 is about 21868.2122497473. The cubic root of 478218707 is about 782.0037823353.

The spelling of 478218707 in words is "four hundred seventy-eight million, two hundred eighteen thousand, seven hundred seven".