1728881133 has 16 divisors (see below), whose sum is σ = 2635205760. Its totient is φ = 987662016.

The previous prime is 1728881131. The next prime is 1728881137. The reversal of 1728881133 is 3311888271.

1728881133 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1728881133 - 2¹ = 1728881131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728881131) 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, 87583 + ... + 105491.

It is an arithmetic number, because the mean of its divisors is an integer number (164700360).

Almost surely, 2^1728881133 is an apocalyptic number.

It is an amenable number.

1728881133 is a deficient number, since it is larger than the sum of its proper divisors (906324627).

1728881133 is a wasteful number, since it uses less digits than its factorization.

1728881133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22516.

The product of its digits is 64512, while the sum is 42.

The square root of 1728881133 is about 41579.8164137361. The cubic root of 1728881133 is about 1200.2039313136.

The spelling of 1728881133 in words is "one billion, seven hundred twenty-eight million, eight hundred eighty-one thousand, one hundred thirty-three".