1828173609 has 6 divisors (see below), whose sum is σ = 2640695226. Its totient is φ = 1218782400.

The previous prime is 1828173577. The next prime is 1828173623. The reversal of 1828173609 is 9063718281.

1828173609 is a `hidden beast` number, since 1 + 8 + 28 + 17 + 3 + 609 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1062434025 + 765739584 = 32595^2 + 27672^2 .

It is not a de Polignac number, because 1828173609 - 2⁵ = 1828173577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1828173649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101565192 + ... + 101565209.

It is an arithmetic number, because the mean of its divisors is an integer number (440115871).

Almost surely, 2^1828173609 is an apocalyptic number.

It is an amenable number.

1828173609 is a deficient number, since it is larger than the sum of its proper divisors (812521617).

1828173609 is a wasteful number, since it uses less digits than its factorization.

1828173609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203130407 (or 203130404 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1828173609 is about 42757.1468762826. The cubic root of 1828173609 is about 1222.7541489246.

The spelling of 1828173609 in words is "one billion, eight hundred twenty-eight million, one hundred seventy-three thousand, six hundred nine".