538224048138 has 64 divisors (see below), whose sum is σ = 1248336552960. Its totient is φ = 151524317952.

The previous prime is 538224048127. The next prime is 538224048149. The reversal of 538224048138 is 831840422835.

It is an interprime number because it is at equal distance from previous prime (538224048127) and next prime (538224048149).

It is a super-2 number, since 2×538224048138² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1117506 + ... + 1524882.

It is an arithmetic number, because the mean of its divisors is an integer number (19505258640).

Almost surely, 2^538224048138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538224048138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624168276480).

538224048138 is an abundant number, since it is smaller than the sum of its proper divisors (710112504822).

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

538224048138 is a wasteful number, since it uses less digits than its factorization.

538224048138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407851.

The product of its (nonzero) digits is 1474560, while the sum is 48.

The spelling of 538224048138 in words is "five hundred thirty-eight billion, two hundred twenty-four million, forty-eight thousand, one hundred thirty-eight".