475138648 has 16 divisors (see below), whose sum is σ = 911603880. Its totient is φ = 232044288.

The previous prime is 475138633. The next prime is 475138649. The reversal of 475138648 is 846831574.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 475138598 and 475138607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475138649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690265 + ... + 690952.

Almost surely, 2^475138648 is an apocalyptic number.

It is an amenable number.

475138648 is a deficient number, since it is larger than the sum of its proper divisors (436465232).

475138648 is a wasteful number, since it uses less digits than its factorization.

475138648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381266 (or 1381262 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 475138648 is about 21797.6752888926. The cubic root of 475138648 is about 780.3212833799.

The spelling of 475138648 in words is "four hundred seventy-five million, one hundred thirty-eight thousand, six hundred forty-eight".