38128163 has 4 divisors (see below), whose sum is σ = 38145720. Its totient is φ = 38110608.

The previous prime is 38128157. The next prime is 38128169. The reversal of 38128163 is 36182183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36182183 = 397 ⋅91139.

It is an interprime number because it is at equal distance from previous prime (38128157) and next prime (38128169).

It is a cyclic number.

It is not a de Polignac number, because 38128163 - 2⁶ = 38128099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38128169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4970 + ... + 10047.

It is an arithmetic number, because the mean of its divisors is an integer number (9536430).

Almost surely, 2^38128163 is an apocalyptic number.

38128163 is a deficient number, since it is larger than the sum of its proper divisors (17557).

38128163 is a wasteful number, since it uses less digits than its factorization.

38128163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17556.

The product of its digits is 6912, while the sum is 32.

The square root of 38128163 is about 6174.8006445553. The cubic root of 38128163 is about 336.5750822128.

The spelling of 38128163 in words is "thirty-eight million, one hundred twenty-eight thousand, one hundred sixty-three".