38538169 has 2 divisors, whose sum is σ = 38538170. Its totient is φ = 38538168.

The previous prime is 38538139. The next prime is 38538173. The reversal of 38538169 is 96183583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31584400 + 6953769 = 5620^2 + 2637^2 .

It is a cyclic number.

It is not a de Polignac number, because 38538169 - 2¹³ = 38529977 is a prime.

It is a super-2 number, since 2×38538169² = 2970380939745122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38538139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19269084 + 19269085.

It is an arithmetic number, because the mean of its divisors is an integer number (19269085).

Almost surely, 2^38538169 is an apocalyptic number.

It is an amenable number.

38538169 is a deficient number, since it is larger than the sum of its proper divisors (1).

38538169 is an equidigital number, since it uses as much as digits as its factorization.

38538169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 38538169 is about 6207.9118067189. The cubic root of 38538169 is about 337.7772215200. Note that the first 3 decimals are identical.

The spelling of 38538169 in words is "thirty-eight million, five hundred thirty-eight thousand, one hundred sixty-nine".