1728995668 has 24 divisors (see below), whose sum is σ = 3188959200. Its totient is φ = 817977888.

The previous prime is 1728995663. The next prime is 1728995677. The reversal of 1728995668 is 8665998271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728995663) 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, 49098 + ... + 76606.

It is an arithmetic number, because the mean of its divisors is an integer number (132873300).

Almost surely, 2^1728995668 is an apocalyptic number.

It is an amenable number.

1728995668 is a deficient number, since it is larger than the sum of its proper divisors (1459963532).

1728995668 is a wasteful number, since it uses less digits than its factorization.

1728995668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28359 (or 28357 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 61.

The square root of 1728995668 is about 41581.1936817595. The cubic root of 1728995668 is about 1200.2304344508.

The spelling of 1728995668 in words is "one billion, seven hundred twenty-eight million, nine hundred ninety-five thousand, six hundred sixty-eight".