2145305233 has 4 divisors (see below), whose sum is σ = 2171152368. Its totient is φ = 2119458100.

The previous prime is 2145305207. The next prime is 2145305249. The reversal of 2145305233 is 3325035412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2145305233 - 2¹³ = 2145297041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145305263) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12923443 + ... + 12923608.

It is an arithmetic number, because the mean of its divisors is an integer number (542788092).

Almost surely, 2^2145305233 is an apocalyptic number.

It is an amenable number.

2145305233 is a deficient number, since it is larger than the sum of its proper divisors (25847135).

2145305233 is an equidigital number, since it uses as much as digits as its factorization.

2145305233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25847134.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 2145305233 is about 46317.4398364158. The cubic root of 2145305233 is about 1289.7227601638.

The spelling of 2145305233 in words is "two billion, one hundred forty-five million, three hundred five thousand, two hundred thirty-three".