538663387 has 2 divisors, whose sum is σ = 538663388. Its totient is φ = 538663386.

The previous prime is 538663379. The next prime is 538663393. The reversal of 538663387 is 783366835.

It is a happy number.

538663387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538663387 - 2³ = 538663379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 538663387.

It is not a weakly prime, because it can be changed into another prime (538663397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269331693 + 269331694.

It is an arithmetic number, because the mean of its divisors is an integer number (269331694).

Almost surely, 2^538663387 is an apocalyptic number.

538663387 is a deficient number, since it is larger than the sum of its proper divisors (1).

538663387 is an equidigital number, since it uses as much as digits as its factorization.

538663387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 49.

The square root of 538663387 is about 23209.1229261254. The cubic root of 538663387 is about 813.6528547092.

The spelling of 538663387 in words is "five hundred thirty-eight million, six hundred sixty-three thousand, three hundred eighty-seven".