2145310166 has 4 divisors (see below), whose sum is σ = 3217965252. Its totient is φ = 1072655082.

The previous prime is 2145310129. The next prime is 2145310169. The reversal of 2145310166 is 6610135412.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145310169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536327540 + ... + 536327543.

It is an arithmetic number, because the mean of its divisors is an integer number (804491313).

Almost surely, 2^2145310166 is an apocalyptic number.

2145310166 is a deficient number, since it is larger than the sum of its proper divisors (1072655086).

2145310166 is a wasteful number, since it uses less digits than its factorization.

2145310166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072655085.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2145310166 is about 46317.4930884650. The cubic root of 2145310166 is about 1289.7237487096.

Adding to 2145310166 its reverse (6610135412), we get a palindrome (8755445578).

The spelling of 2145310166 in words is "two billion, one hundred forty-five million, three hundred ten thousand, one hundred sixty-six".