38155723 has 2 divisors, whose sum is σ = 38155724. Its totient is φ = 38155722.

The previous prime is 38155721. The next prime is 38155757. The reversal of 38155723 is 32755183.

38155723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (38155757) can be obtained adding 38155723 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38155723 - 2¹ = 38155721 is a prime.

It is a super-3 number, since 3×38155723³ (a number of 24 digits) contains 333 as substring.

Together with 38155721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38155721) 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 as a sum of consecutive naturals, namely, 19077861 + 19077862.

It is an arithmetic number, because the mean of its divisors is an integer number (19077862).

Almost surely, 2^38155723 is an apocalyptic number.

38155723 is a deficient number, since it is larger than the sum of its proper divisors (1).

38155723 is an equidigital number, since it uses as much as digits as its factorization.

38155723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 38155723 is about 6177.0318924221. The cubic root of 38155723 is about 336.6561576739.

The spelling of 38155723 in words is "thirty-eight million, one hundred fifty-five thousand, seven hundred twenty-three".