38542169 has 2 divisors, whose sum is σ = 38542170. Its totient is φ = 38542168.

The previous prime is 38542157. The next prime is 38542171. The reversal of 38542169 is 96124583.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29300569 + 9241600 = 5413^2 + 3040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38542169 is a prime.

It is a super-2 number, since 2×38542169² = 2970997582449122, which contains 22 as substring.

Together with 38542171, 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 (38542109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19271084 + 19271085.

It is an arithmetic number, because the mean of its divisors is an integer number (19271085).

Almost surely, 2^38542169 is an apocalyptic number.

It is an amenable number.

38542169 is a deficient number, since it is larger than the sum of its proper divisors (1).

38542169 is an equidigital number, since it uses as much as digits as its factorization.

38542169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 38542169 is about 6208.2339678849. The cubic root of 38542169 is about 337.7889074423.

The spelling of 38542169 in words is "thirty-eight million, five hundred forty-two thousand, one hundred sixty-nine".