478531863 has 24 divisors (see below), whose sum is σ = 715635648. Its totient is φ = 307936512.

The previous prime is 478531849. The next prime is 478531873. The reversal of 478531863 is 368135874.

It is not a de Polignac number, because 478531863 - 2⁴ = 478531847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478531873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23131 + ... + 38627.

It is an arithmetic number, because the mean of its divisors is an integer number (29818152).

Almost surely, 2^478531863 is an apocalyptic number.

478531863 is a deficient number, since it is larger than the sum of its proper divisors (237103785).

478531863 is a wasteful number, since it uses less digits than its factorization.

478531863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15623 (or 15620 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 478531863 is about 21875.3711511371. The cubic root of 478531863 is about 782.1744404728.

The spelling of 478531863 in words is "four hundred seventy-eight million, five hundred thirty-one thousand, eight hundred sixty-three".