863498161 has 2 divisors, whose sum is σ = 863498162. Its totient is φ = 863498160.

The previous prime is 863498137. The next prime is 863498227. The reversal of 863498161 is 161894368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 854977600 + 8520561 = 29240^2 + 2919^2 .

It is a cyclic number.

It is not a de Polignac number, because 863498161 - 2²⁵ = 829943729 is a prime.

It is not a weakly prime, because it can be changed into another prime (863498261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431749080 + 431749081.

It is an arithmetic number, because the mean of its divisors is an integer number (431749081).

Almost surely, 2^863498161 is an apocalyptic number.

It is an amenable number.

863498161 is a deficient number, since it is larger than the sum of its proper divisors (1).

863498161 is an equidigital number, since it uses as much as digits as its factorization.

863498161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The square root of 863498161 is about 29385.3392187329. The cubic root of 863498161 is about 952.2561927456.

The spelling of 863498161 in words is "eight hundred sixty-three million, four hundred ninety-eight thousand, one hundred sixty-one".