2145052449 has 10 divisors (see below), whose sum is σ = 3204337730. Its totient is φ = 1430034912.

The previous prime is 2145052447. The next prime is 2145052487. The reversal of 2145052449 is 9442505412.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1829101824 + 315950625 = 42768^2 + 17775^2 .

It is not a de Polignac number, because 2145052449 - 2¹ = 2145052447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145052447) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13240984 + ... + 13241145.

It is an arithmetic number, because the mean of its divisors is an integer number (320433773).

Almost surely, 2^2145052449 is an apocalyptic number.

It is an amenable number.

2145052449 is a deficient number, since it is larger than the sum of its proper divisors (1059285281).

2145052449 is an equidigital number, since it uses as much as digits as its factorization.

2145052449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26482141 (or 26482132 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 2145052449 is about 46314.7109350798. The cubic root of 2145052449 is about 1289.6721016251.

The spelling of 2145052449 in words is "two billion, one hundred forty-five million, fifty-two thousand, four hundred forty-nine".