38440832181 has 8 divisors (see below), whose sum is σ = 51255371904. Its totient is φ = 25626756960.

The previous prime is 38440832161. The next prime is 38440832251. The reversal of 38440832181 is 18123804483.

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

It is not a de Polignac number, because 38440832181 - 2⁵ = 38440832149 is a prime.

It is a super-2 number, since 2×38440832181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38440832161) 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, 199636 + ... + 341666.

It is an arithmetic number, because the mean of its divisors is an integer number (6406921488).

Almost surely, 2^38440832181 is an apocalyptic number.

It is an amenable number.

38440832181 is a deficient number, since it is larger than the sum of its proper divisors (12814539723).

38440832181 is a wasteful number, since it uses less digits than its factorization.

38440832181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232251.

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 38440832181 in words is "thirty-eight billion, four hundred forty million, eight hundred thirty-two thousand, one hundred eighty-one".