2179328378 has 4 divisors (see below), whose sum is σ = 3268992570. Its totient is φ = 1089664188.

The previous prime is 2179328369. The next prime is 2179328387. The reversal of 2179328378 is 8738239712.

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

It is an interprime number because it is at equal distance from previous prime (2179328369) and next prime (2179328387).

It can be written as a sum of positive squares in only one way, i.e., 1534523929 + 644804449 = 39173^2 + 25393^2 .

It is a super-2 number, since 2×2179328378² = 9498944358312221768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544832093 + ... + 544832096.

Almost surely, 2^2179328378 is an apocalyptic number.

2179328378 is a deficient number, since it is larger than the sum of its proper divisors (1089664192).

2179328378 is a wasteful number, since it uses less digits than its factorization.

2179328378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089664191.

The product of its digits is 1016064, while the sum is 50.

The square root of 2179328378 is about 46683.2772842696. The cubic root of 2179328378 is about 1296.5050856857.

The spelling of 2179328378 in words is "two billion, one hundred seventy-nine million, three hundred twenty-eight thousand, three hundred seventy-eight".