2145432205 has 32 divisors (see below), whose sum is σ = 2992578048. Its totient is φ = 1446144000.

The previous prime is 2145432199. The next prime is 2145432227. The reversal of 2145432205 is 5022345412.

It is not a de Polignac number, because 2145432205 - 2⁹ = 2145431693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 995409 + ... + 997561.

It is an arithmetic number, because the mean of its divisors is an integer number (93518064).

Almost surely, 2^2145432205 is an apocalyptic number.

It is an amenable number.

2145432205 is a deficient number, since it is larger than the sum of its proper divisors (847145843).

2145432205 is a wasteful number, since it uses less digits than its factorization.

2145432205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2145432205 is about 46318.8104877489. The cubic root of 2145432205 is about 1289.7482041651.

Adding to 2145432205 its reverse (5022345412), we get a palindrome (7167777617).

The spelling of 2145432205 in words is "two billion, one hundred forty-five million, four hundred thirty-two thousand, two hundred five".