38618165563 has 2 divisors, whose sum is σ = 38618165564. Its totient is φ = 38618165562.

The previous prime is 38618165497. The next prime is 38618165569. The reversal of 38618165563 is 36556181683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38618165563 is a prime.

It is a super-2 number, since 2×38618165563² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38618165563.

It is not a weakly prime, because it can be changed into another prime (38618165569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19309082781 + 19309082782.

It is an arithmetic number, because the mean of its divisors is an integer number (19309082782).

Almost surely, 2^38618165563 is an apocalyptic number.

38618165563 is a deficient number, since it is larger than the sum of its proper divisors (1).

38618165563 is an equidigital number, since it uses as much as digits as its factorization.

38618165563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 52.

The spelling of 38618165563 in words is "thirty-eight billion, six hundred eighteen million, one hundred sixty-five thousand, five hundred sixty-three".