2185146706 has 4 divisors (see below), whose sum is σ = 3277720062. Its totient is φ = 1092573352.

The previous prime is 2185146641. The next prime is 2185146709. The reversal of 2185146706 is 6076415812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1346523025 + 838623681 = 36695^2 + 28959^2 .

It is a super-2 number, since 2×2185146706² = 9549732253485300872, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2185146709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546286675 + ... + 546286678.

Almost surely, 2^2185146706 is an apocalyptic number.

2185146706 is a deficient number, since it is larger than the sum of its proper divisors (1092573356).

2185146706 is a wasteful number, since it uses less digits than its factorization.

2185146706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092573355.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 2185146706 is about 46745.5527938220. The cubic root of 2185146706 is about 1297.6578549980.

The spelling of 2185146706 in words is "two billion, one hundred eighty-five million, one hundred forty-six thousand, seven hundred six".