38205197 has 2 divisors, whose sum is σ = 38205198. Its totient is φ = 38205196.

The previous prime is 38205191. The next prime is 38205217. The reversal of 38205197 is 79150283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36228361 + 1976836 = 6019^2 + 1406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38205197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38205191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19102598 + 19102599.

It is an arithmetic number, because the mean of its divisors is an integer number (19102599).

Almost surely, 2^38205197 is an apocalyptic number.

It is an amenable number.

38205197 is a deficient number, since it is larger than the sum of its proper divisors (1).

38205197 is an equidigital number, since it uses as much as digits as its factorization.

38205197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 38205197 is about 6181.0352692733. The cubic root of 38205197 is about 336.8016014136.

The spelling of 38205197 in words is "thirty-eight million, two hundred five thousand, one hundred ninety-seven".