2192078646 has 32 divisors (see below), whose sum is σ = 4873144320. Its totient is φ = 730414152.

The previous prime is 2192078611. The next prime is 2192078671. The reversal of 2192078646 is 6468702912.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174451 + ... + 186593.

It is an arithmetic number, because the mean of its divisors is an integer number (152285760).

Almost surely, 2^2192078646 is an apocalyptic number.

2192078646 is an abundant number, since it is smaller than the sum of its proper divisors (2681065674).

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

2192078646 is a wasteful number, since it uses less digits than its factorization.

2192078646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15497 (or 15491 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 2192078646 is about 46819.6395329994. The cubic root of 2192078646 is about 1299.0285930481.

The spelling of 2192078646 in words is "two billion, one hundred ninety-two million, seventy-eight thousand, six hundred forty-six".