38118106457 has 2 divisors, whose sum is σ = 38118106458. Its totient is φ = 38118106456.

The previous prime is 38118106417. The next prime is 38118106501. The reversal of 38118106457 is 75460181183.

It is an a-pointer prime, because the next prime (38118106501) can be obtained adding 38118106457 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32033482441 + 6084624016 = 178979^2 + 78004^2 .

It is a cyclic number.

It is not a de Polignac number, because 38118106457 - 2¹² = 38118102361 is a prime.

It is not a weakly prime, because it can be changed into another prime (38118106417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19059053228 + 19059053229.

It is an arithmetic number, because the mean of its divisors is an integer number (19059053229).

Almost surely, 2^38118106457 is an apocalyptic number.

It is an amenable number.

38118106457 is a deficient number, since it is larger than the sum of its proper divisors (1).

38118106457 is an equidigital number, since it uses as much as digits as its factorization.

38118106457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 38118106457 in words is "thirty-eight billion, one hundred eighteen million, one hundred six thousand, four hundred fifty-seven".