38378149 has 2 divisors, whose sum is σ = 38378150. Its totient is φ = 38378148.

The previous prime is 38378141. The next prime is 38378159. The reversal of 38378149 is 94187383.

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., 33005025 + 5373124 = 5745^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 38378149 - 2³ = 38378141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38378141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19189074 + 19189075.

It is an arithmetic number, because the mean of its divisors is an integer number (19189075).

Almost surely, 2^38378149 is an apocalyptic number.

It is an amenable number.

38378149 is a deficient number, since it is larger than the sum of its proper divisors (1).

38378149 is an equidigital number, since it uses as much as digits as its factorization.

38378149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 38378149 is about 6195.0100080629. The cubic root of 38378149 is about 337.3090614539.

The spelling of 38378149 in words is "thirty-eight million, three hundred seventy-eight thousand, one hundred forty-nine".