38918943 has 12 divisors (see below), whose sum is σ = 64247248. Its totient is φ = 22239360.

The previous prime is 38918939. The next prime is 38918947. The reversal of 38918943 is 34981983.

It is an interprime number because it is at equal distance from previous prime (38918939) and next prime (38918947).

It is not a de Polignac number, because 38918943 - 2² = 38918939 is a prime.

It is a Duffinian number.

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 in 11 ways as a sum of consecutive naturals, for example, 308818 + ... + 308943.

Almost surely, 2^38918943 is an apocalyptic number.

38918943 is a deficient number, since it is larger than the sum of its proper divisors (25328305).

38918943 is a wasteful number, since it uses less digits than its factorization.

38918943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617774 (or 617771 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 38918943 is about 6238.5048689570. The cubic root of 38918943 is about 338.8860399573.

The spelling of 38918943 in words is "thirty-eight million, nine hundred eighteen thousand, nine hundred forty-three".