1920392112 has 80 divisors (see below), whose sum is σ = 5104360800. Its totient is φ = 621772800.

The previous prime is 1920392077. The next prime is 1920392113. The reversal of 1920392112 is 2112930291.

It is a self number, because there is not a number n which added to its sum of digits gives 1920392112.

It is not an unprimeable number, because it can be changed into a prime (1920392113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472264 + ... + 476312.

It is an arithmetic number, because the mean of its divisors is an integer number (63804510).

Almost surely, 2^1920392112 is an apocalyptic number.

1920392112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1920392112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2552180400).

1920392112 is an abundant number, since it is smaller than the sum of its proper divisors (3183968688).

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

1920392112 is a wasteful number, since it uses less digits than its factorization.

1920392112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342 (or 4336 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1920392112 is about 43822.2787175656. The cubic root of 1920392112 is about 1242.9776065635.

The spelling of 1920392112 in words is "one billion, nine hundred twenty million, three hundred ninety-two thousand, one hundred twelve".