1728161107 has 8 divisors (see below), whose sum is σ = 1738857920. Its totient is φ = 1717488360.

The previous prime is 1728161077. The next prime is 1728161137. The reversal of 1728161107 is 7011618271.

It is an interprime number because it is at equal distance from previous prime (1728161077) and next prime (1728161137).

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 1728161107 - 2²³ = 1719772499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1728161137) 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, 150388 + ... + 161470.

It is an arithmetic number, because the mean of its divisors is an integer number (217357240).

Almost surely, 2^1728161107 is an apocalyptic number.

1728161107 is a deficient number, since it is larger than the sum of its proper divisors (10696813).

1728161107 is a wasteful number, since it uses less digits than its factorization.

1728161107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12033.

The product of its (nonzero) digits is 4704, while the sum is 34.

The square root of 1728161107 is about 41571.1571525258. The cubic root of 1728161107 is about 1200.0372921281.

Adding to 1728161107 its reverse (7011618271), we get a palindrome (8739779378).

The spelling of 1728161107 in words is "one billion, seven hundred twenty-eight million, one hundred sixty-one thousand, one hundred seven".