38181117 has 16 divisors (see below), whose sum is σ = 55579328. Its totient is φ = 23172480.

The previous prime is 38181113. The next prime is 38181149. The reversal of 38181117 is 71118183.

It is a happy number.

It is not a de Polignac number, because 38181117 - 2² = 38181113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38181113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3859 + ... + 9552.

It is an arithmetic number, because the mean of its divisors is an integer number (3473708).

Almost surely, 2^38181117 is an apocalyptic number.

It is an amenable number.

38181117 is a deficient number, since it is larger than the sum of its proper divisors (17398211).

38181117 is a wasteful number, since it uses less digits than its factorization.

38181117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13500.

The product of its digits is 1344, while the sum is 30.

The square root of 38181117 is about 6179.0870684916. The cubic root of 38181117 is about 336.7308266875.

The spelling of 38181117 in words is "thirty-eight million, one hundred eighty-one thousand, one hundred seventeen".