538017438 has 64 divisors (see below), whose sum is σ = 1255491072. Its totient is φ = 150526080.

The previous prime is 538017427. The next prime is 538017439. The reversal of 538017438 is 834710835.

It is a junction number, because it is equal to n+sod(n) for n = 538017396 and 538017405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538017439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 955345 + ... + 955907.

It is an arithmetic number, because the mean of its divisors is an integer number (19617048).

Almost surely, 2^538017438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538017438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627745536).

538017438 is an abundant number, since it is smaller than the sum of its proper divisors (717473634).

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

538017438 is a wasteful number, since it uses less digits than its factorization.

538017438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 538017438 is about 23195.2029092224. The cubic root of 538017438 is about 813.3274885737.

The spelling of 538017438 in words is "five hundred thirty-eight million, seventeen thousand, four hundred thirty-eight".