170840584349 has 2 divisors, whose sum is σ = 170840584350. Its totient is φ = 170840584348.

The previous prime is 170840584309. The next prime is 170840584381. The reversal of 170840584349 is 943485048071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94976145124 + 75864439225 = 308182^2 + 275435^2 .

It is an emirp because it is prime and its reverse (943485048071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170840584349 - 2¹⁶ = 170840518813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170840584349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170840584309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85420292174 + 85420292175.

It is an arithmetic number, because the mean of its divisors is an integer number (85420292175).

Almost surely, 2^170840584349 is an apocalyptic number.

It is an amenable number.

170840584349 is a deficient number, since it is larger than the sum of its proper divisors (1).

170840584349 is an equidigital number, since it uses as much as digits as its factorization.

170840584349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 170840584349 in words is "one hundred seventy billion, eight hundred forty million, five hundred eighty-four thousand, three hundred forty-nine".