38189257 has 2 divisors, whose sum is σ = 38189258. Its totient is φ = 38189256.

The previous prime is 38189243. The next prime is 38189273. The reversal of 38189257 is 75298183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38180041 + 9216 = 6179^2 + 96^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38189257 is a prime.

It is not a weakly prime, because it can be changed into another prime (38189227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19094628 + 19094629.

It is an arithmetic number, because the mean of its divisors is an integer number (19094629).

Almost surely, 2^38189257 is an apocalyptic number.

It is an amenable number.

38189257 is a deficient number, since it is larger than the sum of its proper divisors (1).

38189257 is an equidigital number, since it uses as much as digits as its factorization.

38189257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 38189257 is about 6179.7457067423. The cubic root of 38189257 is about 336.7547546951.

The spelling of 38189257 in words is "thirty-eight million, one hundred eighty-nine thousand, two hundred fifty-seven".