38181018 has 8 divisors (see below), whose sum is σ = 76362048. Its totient is φ = 12727004.

The previous prime is 38181007. The next prime is 38181019. The reversal of 38181018 is 81018183.

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

38181018 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (38181019) 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, 3181746 + ... + 3181757.

It is an arithmetic number, because the mean of its divisors is an integer number (9545256).

Almost surely, 2^38181018 is an apocalyptic number.

38181018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38181018 is a wasteful number, since it uses less digits than its factorization.

38181018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6363508.

The product of its (nonzero) digits is 1536, while the sum is 30.

The square root of 38181018 is about 6179.0790575943. The cubic root of 38181018 is about 336.7305356503.

The spelling of 38181018 in words is "thirty-eight million, one hundred eighty-one thousand, eighteen".