538678458 has 64 divisors (see below), whose sum is σ = 1236343680. Its totient is φ = 173746944.

The previous prime is 538678453. The next prime is 538678477. The reversal of 538678458 is 854876835.

538678458 is a `hidden beast` number, since 538 + 67 + 8 + 45 + 8 = 666.

It is a super-2 number, since 2×538678458² = 580348962226515528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (538678453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261360 + ... + 263412.

It is an arithmetic number, because the mean of its divisors is an integer number (19317870).

Almost surely, 2^538678458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538678458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618171840).

538678458 is an abundant number, since it is smaller than the sum of its proper divisors (697665222).

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

538678458 is a wasteful number, since it uses less digits than its factorization.

538678458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220 (or 2214 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The square root of 538678458 is about 23209.4476022158. The cubic root of 538678458 is about 813.6604429038.

The spelling of 538678458 in words is "five hundred thirty-eight million, six hundred seventy-eight thousand, four hundred fifty-eight".