638150 has 12 divisors (see below), whose sum is σ = 1187052. Its totient is φ = 255240.

The previous prime is 638147. The next prime is 638159. The reversal of 638150 is 51836.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 638150.

It is not an unprimeable number, because it can be changed into a prime (638159) 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 5 ways as a sum of consecutive naturals, for example, 6332 + ... + 6431.

It is an arithmetic number, because the mean of its divisors is an integer number (98921).

2⁶³⁸¹⁵⁰ is an apocalyptic number.

638150 is a deficient number, since it is larger than the sum of its proper divisors (548902).

638150 is a wasteful number, since it uses less digits than its factorization.

638150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12775 (or 12770 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 638150 is about 798.8429132189. The cubic root of 638150 is about 86.0942719607.

Adding to 638150 its reverse (51836), we get a palindrome (689986).

The spelling of 638150 in words is "six hundred thirty-eight thousand, one hundred fifty".