38409193 has 2 divisors, whose sum is σ = 38409194. Its totient is φ = 38409192.

The previous prime is 38409143. The next prime is 38409197. The reversal of 38409193 is 39190483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29246464 + 9162729 = 5408^2 + 3027^2 .

It is a cyclic number.

It is not a de Polignac number, because 38409193 - 2⁹ = 38408681 is a prime.

It is a super-2 number, since 2×38409193² = 2950532213822498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38409197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19204596 + 19204597.

It is an arithmetic number, because the mean of its divisors is an integer number (19204597).

Almost surely, 2^38409193 is an apocalyptic number.

It is an amenable number.

38409193 is a deficient number, since it is larger than the sum of its proper divisors (1).

38409193 is an equidigital number, since it uses as much as digits as its factorization.

38409193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 38409193 is about 6197.5150665408. The cubic root of 38409193 is about 337.3999864604.

The spelling of 38409193 in words is "thirty-eight million, four hundred nine thousand, one hundred ninety-three".