2078219986 has 8 divisors (see below), whose sum is σ = 3118616460. Its totient is φ = 1038681168.

The previous prime is 2078219933. The next prime is 2078219989. The reversal of 2078219986 is 6899128702.

It can be written as a sum of positive squares in 2 ways, for example, as 1898257761 + 179962225 = 43569^2 + 13415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2078219986³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2078219989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208321 + ... + 218068.

Almost surely, 2^2078219986 is an apocalyptic number.

2078219986 is a deficient number, since it is larger than the sum of its proper divisors (1040396474).

2078219986 is a wasteful number, since it uses less digits than its factorization.

2078219986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428828.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 2078219986 is about 45587.4981327118. The cubic root of 2078219986 is about 1276.1366229336.

The spelling of 2078219986 in words is "two billion, seventy-eight million, two hundred nineteen thousand, nine hundred eighty-six".