2178134416 has 20 divisors (see below), whose sum is σ = 4238571100. Its totient is φ = 1084309632.

The previous prime is 2178134411. The next prime is 2178134417. The reversal of 2178134416 is 6144318712.

It can be written as a sum of positive squares in 2 ways, for example, as 1476096400 + 702038016 = 38420^2 + 26496^2 .

It is a super-2 number, since 2×2178134416² = 9488539068327322112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2178134411) 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, 293571 + ... + 300898.

It is an arithmetic number, because the mean of its divisors is an integer number (211928555).

Almost surely, 2^2178134416 is an apocalyptic number.

It is an amenable number.

2178134416 is a deficient number, since it is larger than the sum of its proper divisors (2060436684).

2178134416 is a wasteful number, since it uses less digits than its factorization.

2178134416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594706 (or 594700 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 2178134416 is about 46670.4876340499. The cubic root of 2178134416 is about 1296.2682756365.

The spelling of 2178134416 in words is "two billion, one hundred seventy-eight million, one hundred thirty-four thousand, four hundred sixteen".