2179814816 has 12 divisors (see below), whose sum is σ = 4291510482. Its totient is φ = 1089907392.

The previous prime is 2179814797. The next prime is 2179814827. The reversal of 2179814816 is 6184189712.

It can be written as a sum of positive squares in only one way, i.e., 1418275600 + 761539216 = 37660^2 + 27596^2 .

It is a super-2 number, since 2×2179814816² = 9503185264106227712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34059575 + ... + 34059638.

Almost surely, 2^2179814816 is an apocalyptic number.

It is an amenable number.

2179814816 is a deficient number, since it is larger than the sum of its proper divisors (2111695666).

2179814816 is an equidigital number, since it uses as much as digits as its factorization.

2179814816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68119223 (or 68119215 counting only the distinct ones).

The product of its digits is 193536, while the sum is 47.

The square root of 2179814816 is about 46688.4869748421. The cubic root of 2179814816 is about 1296.6015408490.

The spelling of 2179814816 in words is "two billion, one hundred seventy-nine million, eight hundred fourteen thousand, eight hundred sixteen".