800637161 has 2 divisors, whose sum is σ = 800637162. Its totient is φ = 800637160.

The previous prime is 800637119. The next prime is 800637193. The reversal of 800637161 is 161736008.

It is an a-pointer prime, because the next prime (800637193) can be obtained adding 800637161 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483120400 + 317516761 = 21980^2 + 17819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800637161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (800627161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400318580 + 400318581.

It is an arithmetic number, because the mean of its divisors is an integer number (400318581).

Almost surely, 2^800637161 is an apocalyptic number.

It is an amenable number.

800637161 is a deficient number, since it is larger than the sum of its proper divisors (1).

800637161 is an equidigital number, since it uses as much as digits as its factorization.

800637161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 800637161 is about 28295.5325272383. The cubic root of 800637161 is about 928.5641546041.

The spelling of 800637161 in words is "eight hundred million, six hundred thirty-seven thousand, one hundred sixty-one".