8138270401 has 2 divisors, whose sum is σ = 8138270402. Its totient is φ = 8138270400.

The previous prime is 8138270353. The next prime is 8138270419. The reversal of 8138270401 is 1040728318.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4799164176 + 3339106225 = 69276^2 + 57785^2 .

It is a cyclic number.

It is not a de Polignac number, because 8138270401 - 2¹⁷ = 8138139329 is a prime.

It is not a weakly prime, because it can be changed into another prime (8138270501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4069135200 + 4069135201.

It is an arithmetic number, because the mean of its divisors is an integer number (4069135201).

Almost surely, 2^8138270401 is an apocalyptic number.

It is an amenable number.

8138270401 is a deficient number, since it is larger than the sum of its proper divisors (1).

8138270401 is an equidigital number, since it uses as much as digits as its factorization.

8138270401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 8138270401 is about 90212.3627946857. The cubic root of 8138270401 is about 2011.4567792058.

Adding to 8138270401 its reverse (1040728318), we get a palindrome (9178998719).

The spelling of 8138270401 in words is "eight billion, one hundred thirty-eight million, two hundred seventy thousand, four hundred one".