475144138 has 8 divisors (see below), whose sum is σ = 814532832. Its totient is φ = 203633196.

The previous prime is 475144133. The next prime is 475144147. The reversal of 475144138 is 831441574.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 475144097 and 475144106.

It is not an unprimeable number, because it can be changed into a prime (475144133) 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, 16969420 + ... + 16969447.

It is an arithmetic number, because the mean of its divisors is an integer number (101816604).

Almost surely, 2^475144138 is an apocalyptic number.

475144138 is a deficient number, since it is larger than the sum of its proper divisors (339388694).

475144138 is a wasteful number, since it uses less digits than its factorization.

475144138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33938876.

The product of its digits is 53760, while the sum is 37.

The square root of 475144138 is about 21797.8012193891. The cubic root of 475144138 is about 780.3242887815.

The spelling of 475144138 in words is "four hundred seventy-five million, one hundred forty-four thousand, one hundred thirty-eight".