38181131 has 8 divisors (see below), whose sum is σ = 38930544. Its totient is φ = 37439200.

The previous prime is 38181113. The next prime is 38181149. The reversal of 38181131 is 13118183.

It is an interprime number because it is at equal distance from previous prime (38181113) and next prime (38181149).

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

It is a cyclic number.

It is not a de Polignac number, because 38181131 - 2¹⁸ = 37918987 is a prime.

It is a super-2 number, since 2×38181131² = 2915597528878322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38181131.

It is not an unprimeable number, because it can be changed into a prime (38181191) 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 7 ways as a sum of consecutive naturals, for example, 9041 + ... + 12573.

It is an arithmetic number, because the mean of its divisors is an integer number (4866318).

Almost surely, 2^38181131 is an apocalyptic number.

38181131 is a deficient number, since it is larger than the sum of its proper divisors (749413).

38181131 is a wasteful number, since it uses less digits than its factorization.

38181131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741.

The product of its digits is 576, while the sum is 26.

The square root of 38181131 is about 6179.0882013449. The cubic root of 38181131 is about 336.7308678443.

The spelling of 38181131 in words is "thirty-eight million, one hundred eighty-one thousand, one hundred thirty-one".