63138941 has 4 divisors (see below), whose sum is σ = 64003932. Its totient is φ = 62273952.

The previous prime is 63138931. The next prime is 63138947. The reversal of 63138941 is 14983136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35880100 + 27258841 = 5990^2 + 5221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63138941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63138947) 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, 432386 + ... + 432531.

It is an arithmetic number, because the mean of its divisors is an integer number (16000983).

Almost surely, 2^63138941 is an apocalyptic number.

It is an amenable number.

63138941 is a deficient number, since it is larger than the sum of its proper divisors (864991).

63138941 is an equidigital number, since it uses as much as digits as its factorization.

63138941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864990.

The product of its digits is 15552, while the sum is 35.

The square root of 63138941 is about 7946.0015731184. The cubic root of 63138941 is about 398.1980214568.

The spelling of 63138941 in words is "sixty-three million, one hundred thirty-eight thousand, nine hundred forty-one".