138270563 has 2 divisors, whose sum is σ = 138270564. Its totient is φ = 138270562.

The previous prime is 138270551. The next prime is 138270577. The reversal of 138270563 is 365072831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138270563 - 2¹⁰ = 138269539 is a prime.

It is a Chen prime.

It is equal to p_7819802 and since 138270563 and 7819802 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (138270593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69135281 + 69135282.

It is an arithmetic number, because the mean of its divisors is an integer number (69135282).

Almost surely, 2^138270563 is an apocalyptic number.

138270563 is a deficient number, since it is larger than the sum of its proper divisors (1).

138270563 is an equidigital number, since it uses as much as digits as its factorization.

138270563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 138270563 is about 11758.8504114986. The cubic root of 138270563 is about 517.1024281166.

The spelling of 138270563 in words is "one hundred thirty-eight million, two hundred seventy thousand, five hundred sixty-three".