38163091 has 4 divisors (see below), whose sum is σ = 38177784. Its totient is φ = 38148400.

The previous prime is 38163071. The next prime is 38163143. The reversal of 38163091 is 19036183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19036183 = 3169 ⋅6007.

It is a cyclic number.

It is not a de Polignac number, because 38163091 - 2¹⁷ = 38032019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38163031) 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, 2290 + ... + 9031.

It is an arithmetic number, because the mean of its divisors is an integer number (9544446).

Almost surely, 2^38163091 is an apocalyptic number.

38163091 is a deficient number, since it is larger than the sum of its proper divisors (14693).

38163091 is a wasteful number, since it uses less digits than its factorization.

38163091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14692.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 38163091 is about 6177.6282665761. The cubic root of 38163091 is about 336.6778260959.

The spelling of 38163091 in words is "thirty-eight million, one hundred sixty-three thousand, ninety-one".