985770193 has 2 divisors, whose sum is σ = 985770194. Its totient is φ = 985770192.

The previous prime is 985770157. The next prime is 985770239. The reversal of 985770193 is 391077589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 575424144 + 410346049 = 23988^2 + 20257^2 .

It is a cyclic number.

It is not a de Polignac number, because 985770193 - 2¹⁷ = 985639121 is a prime.

It is not a weakly prime, because it can be changed into another prime (985770113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492885096 + 492885097.

It is an arithmetic number, because the mean of its divisors is an integer number (492885097).

Almost surely, 2^985770193 is an apocalyptic number.

It is an amenable number.

985770193 is a deficient number, since it is larger than the sum of its proper divisors (1).

985770193 is an equidigital number, since it uses as much as digits as its factorization.

985770193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 49.

The square root of 985770193 is about 31396.9774500668. The cubic root of 985770193 is about 995.2340528326.

The spelling of 985770193 in words is "nine hundred eighty-five million, seven hundred seventy thousand, one hundred ninety-three".