38918723 has 2 divisors, whose sum is σ = 38918724. Its totient is φ = 38918722.

The previous prime is 38918683. The next prime is 38918753. The reversal of 38918723 is 32781983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38918723 - 2¹⁰ = 38917699 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (38918753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19459361 + 19459362.

It is an arithmetic number, because the mean of its divisors is an integer number (19459362).

Almost surely, 2^38918723 is an apocalyptic number.

38918723 is a deficient number, since it is larger than the sum of its proper divisors (1).

38918723 is an equidigital number, since it uses as much as digits as its factorization.

38918723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 38918723 is about 6238.4872365021. The cubic root of 38918723 is about 338.8854014074.

The spelling of 38918723 in words is "thirty-eight million, nine hundred eighteen thousand, seven hundred twenty-three".