1920222396 has 24 divisors (see below), whose sum is σ = 4978354640. Its totient is φ = 640074096.

The previous prime is 1920222391. The next prime is 1920222397. The reversal of 1920222396 is 6932220291.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1920222396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920222391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8889811 + ... + 8890026.

Almost surely, 2^1920222396 is an apocalyptic number.

It is an amenable number.

1920222396 is an abundant number, since it is smaller than the sum of its proper divisors (3058132244).

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

1920222396 is a wasteful number, since it uses less digits than its factorization.

1920222396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17779850 (or 17779842 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1920222396 is about 43820.3422624698. The cubic root of 1920222396 is about 1242.9409891455.

The spelling of 1920222396 in words is "one billion, nine hundred twenty million, two hundred twenty-two thousand, three hundred ninety-six".