638546041 has 8 divisors (see below), whose sum is σ = 754931520. Its totient is φ = 528451728.

The previous prime is 638545997. The next prime is 638546059. The reversal of 638546041 is 140645836.

It is a happy number.

638546041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 638546041 - 2⁷ = 638545913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (638546081) 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, 1572571 + ... + 1572976.

It is an arithmetic number, because the mean of its divisors is an integer number (94366440).

Almost surely, 2^638546041 is an apocalyptic number.

It is an amenable number.

638546041 is a deficient number, since it is larger than the sum of its proper divisors (116385479).

638546041 is a wasteful number, since it uses less digits than its factorization.

638546041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145583.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 638546041 is about 25269.4685539684. The cubic root of 638546041 is about 861.1207854243.

The spelling of 638546041 in words is "six hundred thirty-eight million, five hundred forty-six thousand, forty-one".