63858138 has 8 divisors (see below), whose sum is σ = 127716288. Its totient is φ = 21286044.

The previous prime is 63858133. The next prime is 63858161. The reversal of 63858138 is 83185836.

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

63858138 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 63858138.

It is not an unprimeable number, because it can be changed into a prime (63858131) 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, 5321506 + ... + 5321517.

It is an arithmetic number, because the mean of its divisors is an integer number (15964536).

Almost surely, 2^63858138 is an apocalyptic number.

63858138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63858138 is a wasteful number, since it uses less digits than its factorization.

63858138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10643028.

The product of its digits is 138240, while the sum is 42.

The square root of 63858138 is about 7991.1287062592. The cubic root of 63858138 is about 399.7042355290.

The spelling of 63858138 in words is "sixty-three million, eight hundred fifty-eight thousand, one hundred thirty-eight".