63138534 has 32 divisors (see below), whose sum is σ = 130546944. Its totient is φ = 20344800.

The previous prime is 63138533. The next prime is 63138547. The reversal of 63138534 is 43583136.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63138495 and 63138504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63138533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24847 + ... + 27269.

It is an arithmetic number, because the mean of its divisors is an integer number (4079592).

Almost surely, 2^63138534 is an apocalyptic number.

63138534 is an abundant number, since it is smaller than the sum of its proper divisors (67408410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63138534 is a wasteful number, since it uses less digits than its factorization.

63138534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572.

The product of its digits is 25920, while the sum is 33.

The square root of 63138534 is about 7945.9759627122. The cubic root of 63138534 is about 398.1971658467.

The spelling of 63138534 in words is "sixty-three million, one hundred thirty-eight thousand, five hundred thirty-four".