538118197 has 2 divisors, whose sum is σ = 538118198. Its totient is φ = 538118196.

The previous prime is 538118179. The next prime is 538118227. The reversal of 538118197 is 791811835.

Together with previous prime (538118179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379509361 + 158608836 = 19481^2 + 12594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538118197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538118137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269059098 + 269059099.

It is an arithmetic number, because the mean of its divisors is an integer number (269059099).

Almost surely, 2^538118197 is an apocalyptic number.

It is an amenable number.

538118197 is a deficient number, since it is larger than the sum of its proper divisors (1).

538118197 is an equidigital number, since it uses as much as digits as its factorization.

538118197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 43.

The square root of 538118197 is about 23197.3747868159. The cubic root of 538118197 is about 813.3782582720.

The spelling of 538118197 in words is "five hundred thirty-eight million, one hundred eighteen thousand, one hundred ninety-seven".