1728409053 has 16 divisors (see below), whose sum is σ = 2634353280. Its totient is φ = 987442176.

The previous prime is 1728409027. The next prime is 1728409063. The reversal of 1728409053 is 3509048271.

It is not a de Polignac number, because 1728409053 - 2⁵ = 1728409021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728409013) 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, 158893 + ... + 169421.

It is an arithmetic number, because the mean of its divisors is an integer number (164647080).

Almost surely, 2^1728409053 is an apocalyptic number.

It is an amenable number.

1728409053 is a deficient number, since it is larger than the sum of its proper divisors (905944227).

1728409053 is a wasteful number, since it uses less digits than its factorization.

1728409053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18356.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1728409053 is about 41574.1392334225. The cubic root of 1728409053 is about 1200.0946807239.

The spelling of 1728409053 in words is "one billion, seven hundred twenty-eight million, four hundred nine thousand, fifty-three".