1670172212 has 12 divisors (see below), whose sum is σ = 2924215140. Its totient is φ = 834682176.

The previous prime is 1670172197. The next prime is 1670172221. The reversal of 1670172212 is 2122710761.

It can be written as a sum of positive squares in 2 ways, for example, as 1571646736 + 98525476 = 39644^2 + 9926^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91583 + ... + 108294.

It is an arithmetic number, because the mean of its divisors is an integer number (243684595).

Almost surely, 2^1670172212 is an apocalyptic number.

It is an amenable number.

1670172212 is a deficient number, since it is larger than the sum of its proper divisors (1254042928).

1670172212 is a wasteful number, since it uses less digits than its factorization.

1670172212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201970 (or 201968 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 1670172212 is about 40867.7404807264. The cubic root of 1670172212 is about 1186.4617760901.

Adding to 1670172212 its reverse (2122710761), we get a palindrome (3792882973).

The spelling of 1670172212 in words is "one billion, six hundred seventy million, one hundred seventy-two thousand, two hundred twelve".