478323813 has 32 divisors (see below), whose sum is σ = 709817472. Its totient is φ = 284083200.

The previous prime is 478323809. The next prime is 478323817. The reversal of 478323813 is 318323874.

It is an interprime number because it is at equal distance from previous prime (478323809) and next prime (478323817).

It is not a de Polignac number, because 478323813 - 2² = 478323809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478323817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435481 + ... + 436577.

It is an arithmetic number, because the mean of its divisors is an integer number (22181796).

Almost surely, 2^478323813 is an apocalyptic number.

It is an amenable number.

478323813 is a deficient number, since it is larger than the sum of its proper divisors (231493659).

478323813 is a wasteful number, since it uses less digits than its factorization.

478323813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365.

The product of its digits is 96768, while the sum is 39.

The square root of 478323813 is about 21870.6152862694. The cubic root of 478323813 is about 782.0610694213.

The spelling of 478323813 in words is "four hundred seventy-eight million, three hundred twenty-three thousand, eight hundred thirteen".