38116861 has 2 divisors, whose sum is σ = 38116862. Its totient is φ = 38116860.

The previous prime is 38116843. The next prime is 38116867. The reversal of 38116861 is 16861183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38068900 + 47961 = 6170^2 + 219^2 .

It is an emirp because it is prime and its reverse (16861183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38116861 - 2¹³ = 38108669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38116867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19058430 + 19058431.

It is an arithmetic number, because the mean of its divisors is an integer number (19058431).

Almost surely, 2^38116861 is an apocalyptic number.

It is an amenable number.

38116861 is a deficient number, since it is larger than the sum of its proper divisors (1).

38116861 is an equidigital number, since it uses as much as digits as its factorization.

38116861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 38116861 is about 6173.8854054801. The cubic root of 38116861 is about 336.5418229175.

The spelling of 38116861 in words is "thirty-eight million, one hundred sixteen thousand, eight hundred sixty-one".