38162009 has 2 divisors, whose sum is σ = 38162010. Its totient is φ = 38162008.

The previous prime is 38161997. The next prime is 38162011. The reversal of 38162009 is 90026183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21187609 + 16974400 = 4603^2 + 4120^2 .

It is a cyclic number.

It is not a de Polignac number, because 38162009 - 2¹² = 38157913 is a prime.

Together with 38162011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38122009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19081004 + 19081005.

It is an arithmetic number, because the mean of its divisors is an integer number (19081005).

Almost surely, 2^38162009 is an apocalyptic number.

It is an amenable number.

38162009 is a deficient number, since it is larger than the sum of its proper divisors (1).

38162009 is an equidigital number, since it uses as much as digits as its factorization.

38162009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 38162009 is about 6177.5406918935. The cubic root of 38162009 is about 336.6746442358.

The spelling of 38162009 in words is "thirty-eight million, one hundred sixty-two thousand, nine".