2145204306 has 24 divisors (see below), whose sum is σ = 5311934784. Its totient is φ = 612915480.

The previous prime is 2145204277. The next prime is 2145204311. The reversal of 2145204306 is 6034025412.

It is a self number, because there is not a number n which added to its sum of digits gives 2145204306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8512590 + ... + 8512841.

It is an arithmetic number, because the mean of its divisors is an integer number (221330616).

Almost surely, 2^2145204306 is an apocalyptic number.

2145204306 is an abundant number, since it is smaller than the sum of its proper divisors (3166730478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145204306 is a wasteful number, since it uses less digits than its factorization.

2145204306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17025446 (or 17025443 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2145204306 is about 46316.3503095829. The cubic root of 2145204306 is about 1289.7025346207.

Adding to 2145204306 its reverse (6034025412), we get a palindrome (8179229718).

The spelling of 2145204306 in words is "two billion, one hundred forty-five million, two hundred four thousand, three hundred six".