1920228608 has 36 divisors (see below), whose sum is σ = 4058433540. Its totient is φ = 903634944.

The previous prime is 1920228601. The next prime is 1920228613. The reversal of 1920228608 is 8068220291.

It can be written as a sum of positive squares in 2 ways, for example, as 633428224 + 1286800384 = 25168^2 + 35872^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920228601) 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 3 ways as a sum of consecutive naturals, for example, 216263 + ... + 224966.

It is an arithmetic number, because the mean of its divisors is an integer number (112734265).

Almost surely, 2^1920228608 is an apocalyptic number.

It is an amenable number.

1920228608 is an abundant number, since it is smaller than the sum of its proper divisors (2138204932).

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

1920228608 is an equidigital number, since it uses as much as digits as its factorization.

1920228608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441262 (or 441248 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1920228608 is about 43820.4131427352. The cubic root of 1920228608 is about 1242.9423294661.

Adding to 1920228608 its reverse (8068220291), we get a palindrome (9988448899).

The spelling of 1920228608 in words is "one billion, nine hundred twenty million, two hundred twenty-eight thousand, six hundred eight".