38190409 has 2 divisors, whose sum is σ = 38190410. Its totient is φ = 38190408.

The previous prime is 38190377. The next prime is 38190413. The reversal of 38190409 is 90409183.

38190409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38007225 + 183184 = 6165^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 38190409 - 2⁵ = 38190377 is a prime.

It is not a weakly prime, because it can be changed into another prime (38190809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19095204 + 19095205.

It is an arithmetic number, because the mean of its divisors is an integer number (19095205).

Almost surely, 2^38190409 is an apocalyptic number.

It is an amenable number.

38190409 is a deficient number, since it is larger than the sum of its proper divisors (1).

38190409 is an equidigital number, since it uses as much as digits as its factorization.

38190409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 38190409 is about 6179.8389137582. The cubic root of 38190409 is about 336.7581407920.

The spelling of 38190409 in words is "thirty-eight million, one hundred ninety thousand, four hundred nine".