38713643 has 2 divisors, whose sum is σ = 38713644. Its totient is φ = 38713642.

The previous prime is 38713567. The next prime is 38713657. The reversal of 38713643 is 34631783.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38713643 - 2⁸ = 38713387 is a prime.

It is not a weakly prime, because it can be changed into another prime (38713663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19356821 + 19356822.

It is an arithmetic number, because the mean of its divisors is an integer number (19356822).

Almost surely, 2^38713643 is an apocalyptic number.

38713643 is a deficient number, since it is larger than the sum of its proper divisors (1).

38713643 is an equidigital number, since it uses as much as digits as its factorization.

38713643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 38713643 is about 6222.0288491777. The cubic root of 38713643 is about 338.2891070073.

The spelling of 38713643 in words is "thirty-eight million, seven hundred thirteen thousand, six hundred forty-three".