538158457 has 2 divisors, whose sum is σ = 538158458. Its totient is φ = 538158456.

The previous prime is 538158437. The next prime is 538158461. The reversal of 538158457 is 754851835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295702416 + 242456041 = 17196^2 + 15571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538158457 is a prime.

It is a super-2 number, since 2×538158457² = 579229049681241698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (538158437) 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 as a sum of consecutive naturals, namely, 269079228 + 269079229.

It is an arithmetic number, because the mean of its divisors is an integer number (269079229).

Almost surely, 2^538158457 is an apocalyptic number.

It is an amenable number.

538158457 is a deficient number, since it is larger than the sum of its proper divisors (1).

538158457 is an equidigital number, since it uses as much as digits as its factorization.

538158457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672000, while the sum is 46.

The square root of 538158457 is about 23198.2425411926. The cubic root of 538158457 is about 813.3985424105.

The spelling of 538158457 in words is "five hundred thirty-eight million, one hundred fifty-eight thousand, four hundred fifty-seven".