2043545461 has 2 divisors, whose sum is σ = 2043545462. Its totient is φ = 2043545460.

The previous prime is 2043545369. The next prime is 2043545467. The reversal of 2043545461 is 1645453402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129632100 + 913913361 = 33610^2 + 30231^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043545461 - 2¹¹ = 2043543413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043545467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021772730 + 1021772731.

It is an arithmetic number, because the mean of its divisors is an integer number (1021772731).

Almost surely, 2^2043545461 is an apocalyptic number.

It is an amenable number.

2043545461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043545461 is an equidigital number, since it uses as much as digits as its factorization.

2043545461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2043545461 is about 45205.5910369503. The cubic root of 2043545461 is about 1268.9994518825. Note that the first 3 decimals are identical.

Adding to 2043545461 its reverse (1645453402), we get a palindrome (3688998863).

The spelling of 2043545461 in words is "two billion, forty-three million, five hundred forty-five thousand, four hundred sixty-one".