38918942 has 4 divisors (see below), whose sum is σ = 58378416. Its totient is φ = 19459470.

The previous prime is 38918939. The next prime is 38918947. The reversal of 38918942 is 24981983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24981983 = 13 ⋅1921691.

It is a junction number, because it is equal to n+sod(n) for n = 38918893 and 38918902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38918947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9729734 + ... + 9729737.

It is an arithmetic number, because the mean of its divisors is an integer number (14594604).

Almost surely, 2^38918942 is an apocalyptic number.

38918942 is a deficient number, since it is larger than the sum of its proper divisors (19459474).

38918942 is a wasteful number, since it uses less digits than its factorization.

38918942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19459473.

The product of its digits is 124416, while the sum is 44.

The square root of 38918942 is about 6238.5047888096. The cubic root of 38918942 is about 338.8860370548.

The spelling of 38918942 in words is "thirty-eight million, nine hundred eighteen thousand, nine hundred forty-two".