3378161 has 4 divisors (see below), whose sum is σ = 3381924. Its totient is φ = 3374400.

The previous prime is 3378157. The next prime is 3378187. The reversal of 3378161 is 1618733.

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: 1618733 = 1093 ⋅1481.

It can be written as a sum of positive squares in 2 ways, for example, as 1739761 + 1638400 = 1319^2 + 1280^2 .

It is a cyclic number.

It is not a de Polignac number, because 3378161 - 2² = 3378157 is a prime.

It is a super-2 number, since 2×3378161² = 22823943483842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3378131) 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 3 ways as a sum of consecutive naturals, for example, 341 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (845481).

Almost surely, 2^3378161 is an apocalyptic number.

It is an amenable number.

3378161 is a deficient number, since it is larger than the sum of its proper divisors (3763).

3378161 is a wasteful number, since it uses less digits than its factorization.

3378161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762.

The product of its digits is 3024, while the sum is 29.

The square root of 3378161 is about 1837.9774209712. The cubic root of 3378161 is about 150.0468150171.

The spelling of 3378161 in words is "three million, three hundred seventy-eight thousand, one hundred sixty-one".