8419251097 has 2 divisors, whose sum is σ = 8419251098. Its totient is φ = 8419251096.

The previous prime is 8419251079. The next prime is 8419251143. The reversal of 8419251097 is 7901529148.

Together with previous prime (8419251079) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (8419251143) can be obtained adding 8419251097 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5164434496 + 3254816601 = 71864^2 + 57051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8419251097 is a prime.

It is not a weakly prime, because it can be changed into another prime (8419251007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4209625548 + 4209625549.

It is an arithmetic number, because the mean of its divisors is an integer number (4209625549).

Almost surely, 2^8419251097 is an apocalyptic number.

It is an amenable number.

8419251097 is a deficient number, since it is larger than the sum of its proper divisors (1).

8419251097 is an equidigital number, since it uses as much as digits as its factorization.

8419251097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 8419251097 is about 91756.4771392189. The cubic root of 8419251097 is about 2034.3444450731.

The spelling of 8419251097 in words is "eight billion, four hundred nineteen million, two hundred fifty-one thousand, ninety-seven".