2145441047 has 2 divisors, whose sum is σ = 2145441048. Its totient is φ = 2145441046.

The previous prime is 2145440951. The next prime is 2145441073. The reversal of 2145441047 is 7401445412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2145441047 - 2¹⁶ = 2145375511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145447047) 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 as a sum of consecutive naturals, namely, 1072720523 + 1072720524.

It is an arithmetic number, because the mean of its divisors is an integer number (1072720524).

Almost surely, 2^2145441047 is an apocalyptic number.

2145441047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145441047 is an equidigital number, since it uses as much as digits as its factorization.

2145441047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 2145441047 is about 46318.9059348340. The cubic root of 2145441047 is about 1289.7499759818.

Adding to 2145441047 its reverse (7401445412), we get a palindrome (9546886459).

The spelling of 2145441047 in words is "two billion, one hundred forty-five million, four hundred forty-one thousand, forty-seven".