2219025978 has 24 divisors (see below), whose sum is σ = 5177727828. Its totient is φ = 682777152.

The previous prime is 2219025971. The next prime is 2219025983. The reversal of 2219025978 is 8795209122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1537659369 + 681366609 = 39213^2 + 26103^2 .

It is a super-3 number, since 3×2219025978³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2219025971) 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 11 ways as a sum of consecutive naturals, for example, 4741275 + ... + 4741742.

Almost surely, 2^2219025978 is an apocalyptic number.

2219025978 is an abundant number, since it is smaller than the sum of its proper divisors (2958701850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2219025978 is a wasteful number, since it uses less digits than its factorization.

2219025978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9483038 (or 9483035 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2219025978 is about 47106.5385907307. The cubic root of 2219025978 is about 1304.3299365393.

The spelling of 2219025978 in words is "two billion, two hundred nineteen million, twenty-five thousand, nine hundred seventy-eight".