478461138 has 16 divisors (see below), whose sum is σ = 957198816. Its totient is φ = 159440960.

The previous prime is 478461131. The next prime is 478461143. The reversal of 478461138 is 831164874.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 478461138.

It is not an unprimeable number, because it can be changed into a prime (478461131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16045 + ... + 34847.

It is an arithmetic number, because the mean of its divisors is an integer number (59824926).

Almost surely, 2^478461138 is an apocalyptic number.

478461138 is an abundant number, since it is smaller than the sum of its proper divisors (478737678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478461138 is a wasteful number, since it uses less digits than its factorization.

478461138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23049.

The product of its digits is 129024, while the sum is 42.

The square root of 478461138 is about 21873.7545474022. The cubic root of 478461138 is about 782.1359045416.

It can be divided in two parts, 47846 and 1138, that added together give a palindrome (48984).

The spelling of 478461138 in words is "four hundred seventy-eight million, four hundred sixty-one thousand, one hundred thirty-eight".