38678149 has 2 divisors, whose sum is σ = 38678150. Its totient is φ = 38678148.

The previous prime is 38678147. The next prime is 38678161. The reversal of 38678149 is 94187683.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38353249 + 324900 = 6193^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 38678149 - 2¹ = 38678147 is a prime.

Together with 38678147, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 38678099 and 38678108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38678147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19339074 + 19339075.

It is an arithmetic number, because the mean of its divisors is an integer number (19339075).

Almost surely, 2^38678149 is an apocalyptic number.

It is an amenable number.

38678149 is a deficient number, since it is larger than the sum of its proper divisors (1).

38678149 is an equidigital number, since it uses as much as digits as its factorization.

38678149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 38678149 is about 6219.1759100382. The cubic root of 38678149 is about 338.1856903643.

The spelling of 38678149 in words is "thirty-eight million, six hundred seventy-eight thousand, one hundred forty-nine".