170811103849 has 3 divisors (see below), whose sum is σ = 170811517143. Its totient is φ = 170810690556.

The previous prime is 170811103831. The next prime is 170811103867. The reversal of 170811103849 is 948301118071.

The square root of 170811103849 is 413293.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 948301118071 = 1049 ⋅904004879.

It is an interprime number because it is at equal distance from previous prime (170811103831) and next prime (170811103867).

It can be written as a sum of positive squares in only one way, i.e., 139102891225 + 31708212624 = 372965^2 + 178068^2 .

It is not a de Polignac number, because 170811103849 - 2¹¹ = 170811101801 is a prime.

It is a super-2 number, since 2×170811103849² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170811103819) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 206647 + ... + 619939.

It is an arithmetic number, because the mean of its divisors is an integer number (56937172381).

Almost surely, 2^170811103849 is an apocalyptic number.

170811103849 is the 413293-rd square number.

170811103849 is the 206647-th centered octagonal number.

It is an amenable number.

170811103849 is a deficient number, since it is larger than the sum of its proper divisors (413294).

170811103849 is an frugal number, since it uses more digits than its factorization.

170811103849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826586 (or 413293 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 170811103849 in words is "one hundred seventy billion, eight hundred eleven million, one hundred three thousand, eight hundred forty-nine".