9019870697 has 2 divisors, whose sum is σ = 9019870698. Its totient is φ = 9019870696.

The previous prime is 9019870687. The next prime is 9019870709. The reversal of 9019870697 is 7960789109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6241632016 + 2778238681 = 79004^2 + 52709^2 .

It is a cyclic number.

It is not a de Polignac number, because 9019870697 - 2⁸ = 9019870441 is a prime.

It is not a weakly prime, because it can be changed into another prime (9019870637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4509935348 + 4509935349.

It is an arithmetic number, because the mean of its divisors is an integer number (4509935349).

Almost surely, 2^9019870697 is an apocalyptic number.

It is an amenable number.

9019870697 is a deficient number, since it is larger than the sum of its proper divisors (1).

9019870697 is an equidigital number, since it uses as much as digits as its factorization.

9019870697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The square root of 9019870697 is about 94972.9998315311. Note that the first 3 decimals coincide. The cubic root of 9019870697 is about 2081.6135391169.

The spelling of 9019870697 in words is "nine billion, nineteen million, eight hundred seventy thousand, six hundred ninety-seven".