38138161 has 8 divisors (see below), whose sum is σ = 39758400. Its totient is φ = 36538320.

The previous prime is 38138143. The next prime is 38138167. The reversal of 38138161 is 16183183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38138161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38138167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221 + ... + 8818.

It is an arithmetic number, because the mean of its divisors is an integer number (4969800).

Almost surely, 2^38138161 is an apocalyptic number.

It is an amenable number.

38138161 is a deficient number, since it is larger than the sum of its proper divisors (1620239).

38138161 is a wasteful number, since it uses less digits than its factorization.

38138161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199.

The product of its digits is 3456, while the sum is 31.

The square root of 38138161 is about 6175.6101722826. The cubic root of 38138161 is about 336.6044986452.

The spelling of 38138161 in words is "thirty-eight million, one hundred thirty-eight thousand, one hundred sixty-one".