338165761 has 4 divisors (see below), whose sum is σ = 343709524. Its totient is φ = 332622000.

The previous prime is 338165753. The next prime is 338165767. The reversal of 338165761 is 167561833.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124099600 + 214066161 = 11140^2 + 14631^2 .

It is a cyclic number.

It is not a de Polignac number, because 338165761 - 2³ = 338165753 is a prime.

It is a super-2 number, since 2×338165761² = 228712163825418242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338165767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2771790 + ... + 2771911.

It is an arithmetic number, because the mean of its divisors is an integer number (85927381).

It is a Proth number, since it is equal to 645 ⋅ 2¹⁹ + 1 and 645 < 2¹⁹.

Almost surely, 2^338165761 is an apocalyptic number.

It is an amenable number.

338165761 is a deficient number, since it is larger than the sum of its proper divisors (5543763).

338165761 is an equidigital number, since it uses as much as digits as its factorization.

338165761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543762.

The product of its digits is 90720, while the sum is 40.

The square root of 338165761 is about 18389.2838631634. The cubic root of 338165761 is about 696.6958300966.

The spelling of 338165761 in words is "three hundred thirty-eight million, one hundred sixty-five thousand, seven hundred sixty-one".