38423181 has 4 divisors (see below), whose sum is σ = 51230912. Its totient is φ = 25615452.

The previous prime is 38423171. The next prime is 38423183. The reversal of 38423181 is 18132483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-38423181 is a prime.

It is a super-2 number, since 2×38423181² = 2952681676317522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38423183) 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, 6403861 + ... + 6403866.

It is an arithmetic number, because the mean of its divisors is an integer number (12807728).

Almost surely, 2^38423181 is an apocalyptic number.

It is an amenable number.

38423181 is a deficient number, since it is larger than the sum of its proper divisors (12807731).

38423181 is a wasteful number, since it uses less digits than its factorization.

38423181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12807730.

The product of its digits is 4608, while the sum is 30.

The square root of 38423181 is about 6198.6434806335. The cubic root of 38423181 is about 337.4409400085.

The spelling of 38423181 in words is "thirty-eight million, four hundred twenty-three thousand, one hundred eighty-one".