478718253 has 12 divisors (see below), whose sum is σ = 744673020. Its totient is φ = 294595776.

The previous prime is 478718239. The next prime is 478718263. The reversal of 478718253 is 352817874.

It can be written as a sum of positive squares in 2 ways, for example, as 97180164 + 381538089 = 9858^2 + 19533^2 .

It is not a de Polignac number, because 478718253 - 2⁴ = 478718237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 478718199 and 478718208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478718263) 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 in 11 ways as a sum of consecutive naturals, for example, 2045688 + ... + 2045921.

It is an arithmetic number, because the mean of its divisors is an integer number (62056085).

Almost surely, 2^478718253 is an apocalyptic number.

It is an amenable number.

478718253 is a deficient number, since it is larger than the sum of its proper divisors (265954767).

478718253 is a wasteful number, since it uses less digits than its factorization.

478718253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4091628 (or 4091625 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 478718253 is about 21879.6310069434. The cubic root of 478718253 is about 782.2759806076.

The spelling of 478718253 in words is "four hundred seventy-eight million, seven hundred eighteen thousand, two hundred fifty-three".