1729104885 has 12 divisors (see below), whose sum is σ = 2997115212. Its totient is φ = 922189248.

The previous prime is 1729104847. The next prime is 1729104889. The reversal of 1729104885 is 5884019271.

It can be written as a sum of positive squares in 2 ways, for example, as 567249489 + 1161855396 = 23817^2 + 34086^2 .

It is not a de Polignac number, because 1729104885 - 2⁶ = 1729104821 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 38424553 = 1729104885 / (1 + 7 + 2 + 9 + 1 + 0 + 4 + 8 + 8 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1729104885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1729104889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19212232 + ... + 19212321.

It is an arithmetic number, because the mean of its divisors is an integer number (249759601).

Almost surely, 2^1729104885 is an apocalyptic number.

1729104885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1729104885 is a deficient number, since it is larger than the sum of its proper divisors (1268010327).

1729104885 is a wasteful number, since it uses less digits than its factorization.

1729104885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38424564 (or 38424561 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1729104885 is about 41582.5069590567. The cubic root of 1729104885 is about 1200.2557059249.

The spelling of 1729104885 in words is "one billion, seven hundred twenty-nine million, one hundred four thousand, eight hundred eighty-five".