344166813 has 20 divisors (see below), whose sum is σ = 514770300. Its totient is φ = 229156992.

The previous prime is 344166803. The next prime is 344166829. The reversal of 344166813 is 318661443.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 153809604 + 190357209 = 12402^2 + 13797^2 .

It is not a de Polignac number, because 344166813 - 2²² = 339972509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344166803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 76963 + ... + 81311.

It is an arithmetic number, because the mean of its divisors is an integer number (25738515).

Almost surely, 2^344166813 is an apocalyptic number.

It is an amenable number.

344166813 is a deficient number, since it is larger than the sum of its proper divisors (170603487).

344166813 is an equidigital number, since it uses as much as digits as its factorization.

344166813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5338 (or 5329 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 344166813 is about 18551.7334230524. The cubic root of 344166813 is about 700.7928519807.

The spelling of 344166813 in words is "three hundred forty-four million, one hundred sixty-six thousand, eight hundred thirteen".