38424643 has 2 divisors, whose sum is σ = 38424644. Its totient is φ = 38424642.

The previous prime is 38424637. The next prime is 38424647. The reversal of 38424643 is 34642483.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38424643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38424599 and 38424608.

It is not a weakly prime, because it can be changed into another prime (38424647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19212321 + 19212322.

It is an arithmetic number, because the mean of its divisors is an integer number (19212322).

Almost surely, 2^38424643 is an apocalyptic number.

38424643 is a deficient number, since it is larger than the sum of its proper divisors (1).

38424643 is an equidigital number, since it uses as much as digits as its factorization.

38424643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 34.

The square root of 38424643 is about 6198.7614085396. The cubic root of 38424643 is about 337.4452198242.

The spelling of 38424643 in words is "thirty-eight million, four hundred twenty-four thousand, six hundred forty-three".