38378133 has 6 divisors (see below), whose sum is σ = 55435094. Its totient is φ = 25585416.

The previous prime is 38378117. The next prime is 38378141. The reversal of 38378133 is 33187383.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 11410884 = 5193^2 + 3378^2 .

It is not a de Polignac number, because 38378133 - 2⁴ = 38378117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38378633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2132110 + ... + 2132127.

Almost surely, 2^38378133 is an apocalyptic number.

It is an amenable number.

38378133 is a deficient number, since it is larger than the sum of its proper divisors (17056961).

38378133 is a wasteful number, since it uses less digits than its factorization.

38378133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264243 (or 4264240 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 38378133 is about 6195.0087167009. The cubic root of 38378133 is about 337.3090145788.

The spelling of 38378133 in words is "thirty-eight million, three hundred seventy-eight thousand, one hundred thirty-three".