1916728223 has 8 divisors (see below), whose sum is σ = 2057279328. Its totient is φ = 1779266304.

The previous prime is 1916728211. The next prime is 1916728237. The reversal of 1916728223 is 3228276191.

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

It is a cyclic number.

It is not a de Polignac number, because 1916728223 - 2⁶ = 1916728159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916728273) 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, 771011 + ... + 773492.

It is an arithmetic number, because the mean of its divisors is an integer number (257159916).

Almost surely, 2^1916728223 is an apocalyptic number.

1916728223 is a deficient number, since it is larger than the sum of its proper divisors (140551105).

1916728223 is a wasteful number, since it uses less digits than its factorization.

1916728223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544593.

The product of its digits is 72576, while the sum is 41.

The square root of 1916728223 is about 43780.4548057692. The cubic root of 1916728223 is about 1242.1866168346.

The spelling of 1916728223 in words is "one billion, nine hundred sixteen million, seven hundred twenty-eight thousand, two hundred twenty-three".