38385821941 has 2 divisors, whose sum is σ = 38385821942. Its totient is φ = 38385821940.

The previous prime is 38385821927. The next prime is 38385822049. The reversal of 38385821941 is 14912858383.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21085944100 + 17299877841 = 145210^2 + 131529^2 .

It is a cyclic number.

It is not a de Polignac number, because 38385821941 - 2⁷ = 38385821813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38385821141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19192910970 + 19192910971.

It is an arithmetic number, because the mean of its divisors is an integer number (19192910971).

Almost surely, 2^38385821941 is an apocalyptic number.

It is an amenable number.

38385821941 is a deficient number, since it is larger than the sum of its proper divisors (1).

38385821941 is an equidigital number, since it uses as much as digits as its factorization.

38385821941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 52.

The spelling of 38385821941 in words is "thirty-eight billion, three hundred eighty-five million, eight hundred twenty-one thousand, nine hundred forty-one".