478172113 has 4 divisors (see below), whose sum is σ = 478509568. Its totient is φ = 477834660.

The previous prime is 478172111. The next prime is 478172137. The reversal of 478172113 is 311271874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478172113 - 2¹ = 478172111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478172111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166593 + ... + 169438.

It is an arithmetic number, because the mean of its divisors is an integer number (119627392).

Almost surely, 2^478172113 is an apocalyptic number.

It is an amenable number.

478172113 is a deficient number, since it is larger than the sum of its proper divisors (337455).

478172113 is a wasteful number, since it uses less digits than its factorization.

478172113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337454.

The product of its digits is 9408, while the sum is 34.

The square root of 478172113 is about 21867.1468875114. The cubic root of 478172113 is about 781.9783840066.

The spelling of 478172113 in words is "four hundred seventy-eight million, one hundred seventy-two thousand, one hundred thirteen".