2145303506 has 8 divisors (see below), whose sum is σ = 3229573260. Its totient is φ = 1068779088.

The previous prime is 2145303499. The next prime is 2145303521. The reversal of 2145303506 is 6053035412.

It can be written as a sum of positive squares in 2 ways, for example, as 2143227025 + 2076481 = 46295^2 + 1441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1935641 + ... + 1936748.

Almost surely, 2^2145303506 is an apocalyptic number.

2145303506 is a deficient number, since it is larger than the sum of its proper divisors (1084269754).

2145303506 is a wasteful number, since it uses less digits than its factorization.

2145303506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872668.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 2145303506 is about 46317.4211933264. The cubic root of 2145303506 is about 1289.7224140822.

Adding to 2145303506 its reverse (6053035412), we get a palindrome (8198338918).

The spelling of 2145303506 in words is "two billion, one hundred forty-five million, three hundred three thousand, five hundred six".