538291549 has 2 divisors, whose sum is σ = 538291550. Its totient is φ = 538291548.

The previous prime is 538291531. The next prime is 538291597. The reversal of 538291549 is 945192835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536246649 + 2044900 = 23157^2 + 1430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538291549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 538291499 and 538291508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538291529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269145774 + 269145775.

It is an arithmetic number, because the mean of its divisors is an integer number (269145775).

Almost surely, 2^538291549 is an apocalyptic number.

It is an amenable number.

538291549 is a deficient number, since it is larger than the sum of its proper divisors (1).

538291549 is an equidigital number, since it uses as much as digits as its factorization.

538291549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 46.

The square root of 538291549 is about 23201.1109432286. The cubic root of 538291549 is about 813.4655907642.

The spelling of 538291549 in words is "five hundred thirty-eight million, two hundred ninety-one thousand, five hundred forty-nine".