538135722 has 12 divisors (see below), whose sum is σ = 1165960770. Its totient is φ = 179378568.

The previous prime is 538135721. The next prime is 538135723. The reversal of 538135722 is 227531835.

It is a happy number.

538135722 is a `hidden beast` number, since 5 + 3 + 81 + 3 + 572 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (538135721) and next prime (538135723).

It can be written as a sum of positive squares in only one way, i.e., 524364201 + 13771521 = 22899^2 + 3711^2 .

It is a super-2 number, since 2×538135722² = 579180110584922568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (538135721) 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 5 ways as a sum of consecutive naturals, for example, 14948197 + ... + 14948232.

Almost surely, 2^538135722 is an apocalyptic number.

538135722 is an abundant number, since it is smaller than the sum of its proper divisors (627825048).

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

538135722 is a wasteful number, since it uses less digits than its factorization.

538135722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29896437 (or 29896434 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 538135722 is about 23197.7525204490. The cubic root of 538135722 is about 813.3870879922.

The spelling of 538135722 in words is "five hundred thirty-eight million, one hundred thirty-five thousand, seven hundred twenty-two".