1920439722 has 8 divisors (see below), whose sum is σ = 3840879456. Its totient is φ = 640146572.

The previous prime is 1920439699. The next prime is 1920439723. The reversal of 1920439722 is 2279340291.

It is a sphenic number, since it is the product of 3 distinct primes.

1920439722 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1920439723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160036638 + ... + 160036649.

It is an arithmetic number, because the mean of its divisors is an integer number (480109932).

Almost surely, 2^1920439722 is an apocalyptic number.

1920439722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1920439722 is a wasteful number, since it uses less digits than its factorization.

1920439722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320073292.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1920439722 is about 43822.8219310441. The cubic root of 1920439722 is about 1242.9878783676.

The spelling of 1920439722 in words is "one billion, nine hundred twenty million, four hundred thirty-nine thousand, seven hundred twenty-two".