38641843 has 2 divisors, whose sum is σ = 38641844. Its totient is φ = 38641842.

The previous prime is 38641831. The next prime is 38641847. The reversal of 38641843 is 34814683.

It is a strong prime.

It is an emirp because it is prime and its reverse (34814683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38641843 - 2⁹ = 38641331 is a prime.

It is not a weakly prime, because it can be changed into another prime (38641847) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19320921 + 19320922.

It is an arithmetic number, because the mean of its divisors is an integer number (19320922).

Almost surely, 2^38641843 is an apocalyptic number.

38641843 is a deficient number, since it is larger than the sum of its proper divisors (1).

38641843 is an equidigital number, since it uses as much as digits as its factorization.

38641843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 37.

The square root of 38641843 is about 6216.2563492829. The cubic root of 38641843 is about 338.0798423708.

The spelling of 38641843 in words is "thirty-eight million, six hundred forty-one thousand, eight hundred forty-three".