38616817 has 2 divisors, whose sum is σ = 38616818. Its totient is φ = 38616816.

The previous prime is 38616811. The next prime is 38616821. The reversal of 38616817 is 71861683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27029601 + 11587216 = 5199^2 + 3404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38616817 is a prime.

It is a super-2 number, since 2×38616817² = 2982517110422978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38616817.

It is not a weakly prime, because it can be changed into another prime (38616811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19308408 + 19308409.

It is an arithmetic number, because the mean of its divisors is an integer number (19308409).

Almost surely, 2^38616817 is an apocalyptic number.

It is an amenable number.

38616817 is a deficient number, since it is larger than the sum of its proper divisors (1).

38616817 is an equidigital number, since it uses as much as digits as its factorization.

38616817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 38616817 is about 6214.2430753874. The cubic root of 38616817 is about 338.0068419422.

The spelling of 38616817 in words is "thirty-eight million, six hundred sixteen thousand, eight hundred seventeen".