38157133 has 6 divisors (see below), whose sum is σ = 44386926. Its totient is φ = 32706072.

The previous prime is 38157109. The next prime is 38157137. The reversal of 38157133 is 33175183.

It is a happy number.

38157133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35070084 + 3087049 = 5922^2 + 1757^2 .

It is a de Polignac number, because none of the positive numbers 2^k-38157133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38157095 and 38157104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38157137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389310 + ... + 389407.

It is an arithmetic number, because the mean of its divisors is an integer number (7397821).

Almost surely, 2^38157133 is an apocalyptic number.

It is an amenable number.

38157133 is a deficient number, since it is larger than the sum of its proper divisors (6229793).

38157133 is an equidigital number, since it uses as much as digits as its factorization.

38157133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778731 (or 778724 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 38157133 is about 6177.1460238528. The cubic root of 38157133 is about 336.6603045340.

The spelling of 38157133 in words is "thirty-eight million, one hundred fifty-seven thousand, one hundred thirty-three".