1916728222 has 8 divisors (see below), whose sum is σ = 2880076896. Its totient is φ = 956702592.

The previous prime is 1916728211. The next prime is 1916728237. The reversal of 1916728222 is 2228276191.

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

It is a super-2 number, since 2×1916728222² = 7347694154022562568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829318 + ... + 831625.

It is an arithmetic number, because the mean of its divisors is an integer number (360009612).

Almost surely, 2^1916728222 is an apocalyptic number.

1916728222 is a deficient number, since it is larger than the sum of its proper divisors (963348674).

1916728222 is a wasteful number, since it uses less digits than its factorization.

1916728222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661522.

The product of its digits is 48384, while the sum is 40.

The square root of 1916728222 is about 43780.4547943486. The cubic root of 1916728222 is about 1242.1866166185.

The spelling of 1916728222 in words is "one billion, nine hundred sixteen million, seven hundred twenty-eight thousand, two hundred twenty-two".