538158544 has 80 divisors (see below), whose sum is σ = 1307344896. Its totient is φ = 208483200.

The previous prime is 538158521. The next prime is 538158547. The reversal of 538158544 is 445851835.

It is a super-2 number, since 2×538158544² = 579229236960399872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 538158544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538158547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234169 + ... + 236455.

Almost surely, 2^538158544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538158544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653672448).

538158544 is an abundant number, since it is smaller than the sum of its proper divisors (769186352).

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

538158544 is a wasteful number, since it uses less digits than its factorization.

538158544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504 (or 2498 counting only the distinct ones).

The product of its digits is 384000, while the sum is 43.

The square root of 538158544 is about 23198.2444163346. The cubic root of 538158544 is about 813.3985862425.

The spelling of 538158544 in words is "five hundred thirty-eight million, one hundred fifty-eight thousand, five hundred forty-four".