1728607097 has 4 divisors (see below), whose sum is σ = 1975550976. Its totient is φ = 1481663220.

The previous prime is 1728607093. The next prime is 1728607103. The reversal of 1728607097 is 7907068271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1728607097 - 2² = 1728607093 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1728607091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123471929 + ... + 123471942.

It is an arithmetic number, because the mean of its divisors is an integer number (493887744).

Almost surely, 2^1728607097 is an apocalyptic number.

It is an amenable number.

1728607097 is a deficient number, since it is larger than the sum of its proper divisors (246943879).

1728607097 is an equidigital number, since it uses as much as digits as its factorization.

1728607097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246943878.

The product of its (nonzero) digits is 296352, while the sum is 47.

The square root of 1728607097 is about 41576.5209824006. The cubic root of 1728607097 is about 1200.1405152585.

The spelling of 1728607097 in words is "one billion, seven hundred twenty-eight million, six hundred seven thousand, ninety-seven".