1728125103 has 8 divisors (see below), whose sum is σ = 2307764016. Its totient is φ = 1150284800.

The previous prime is 1728125099. The next prime is 1728125129. The reversal of 1728125103 is 3015218271.

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 1728125103 - 2² = 1728125099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728125153) 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, 447408 + ... + 451253.

It is an arithmetic number, because the mean of its divisors is an integer number (288470502).

Almost surely, 2^1728125103 is an apocalyptic number.

1728125103 is a deficient number, since it is larger than the sum of its proper divisors (579638913).

1728125103 is an equidigital number, since it uses as much as digits as its factorization.

1728125103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899305.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 1728125103 is about 41570.7241096424. The cubic root of 1728125103 is about 1200.0289583290.

The spelling of 1728125103 in words is "one billion, seven hundred twenty-eight million, one hundred twenty-five thousand, one hundred three".