1670817172 has 12 divisors (see below), whose sum is σ = 2927057140. Its totient is φ = 834515136.

The previous prime is 1670817163. The next prime is 1670817179. The reversal of 1670817172 is 2717180761.

It can be written as a sum of positive squares in 2 ways, for example, as 953327376 + 717489796 = 30876^2 + 26786^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670817179) 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, 219147 + ... + 226642.

Almost surely, 2^1670817172 is an apocalyptic number.

It is an amenable number.

1670817172 is a deficient number, since it is larger than the sum of its proper divisors (1256239968).

1670817172 is a wasteful number, since it uses less digits than its factorization.

1670817172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446730 (or 446728 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 40.

The square root of 1670817172 is about 40875.6305394791. The cubic root of 1670817172 is about 1186.6144792869.

The spelling of 1670817172 in words is "one billion, six hundred seventy million, eight hundred seventeen thousand, one hundred seventy-two".