538278679 has 2 divisors, whose sum is σ = 538278680. Its totient is φ = 538278678.

The previous prime is 538278659. The next prime is 538278691. The reversal of 538278679 is 976872835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538278679 - 2⁵ = 538278647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538278659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269139339 + 269139340.

It is an arithmetic number, because the mean of its divisors is an integer number (269139340).

Almost surely, 2^538278679 is an apocalyptic number.

538278679 is a deficient number, since it is larger than the sum of its proper divisors (1).

538278679 is an equidigital number, since it uses as much as digits as its factorization.

538278679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 55.

The square root of 538278679 is about 23200.8335841624. The cubic root of 538278679 is about 813.4591076693.

The spelling of 538278679 in words is "five hundred thirty-eight million, two hundred seventy-eight thousand, six hundred seventy-nine".