2043451671 has 4 divisors (see below), whose sum is σ = 2724602232. Its totient is φ = 1362301112.

The previous prime is 2043451661. The next prime is 2043451733. The reversal of 2043451671 is 1761543402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2043451671 - 2¹⁸ = 2043189527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043451661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340575276 + ... + 340575281.

It is an arithmetic number, because the mean of its divisors is an integer number (681150558).

Almost surely, 2^2043451671 is an apocalyptic number.

2043451671 is a deficient number, since it is larger than the sum of its proper divisors (681150561).

2043451671 is an equidigital number, since it uses as much as digits as its factorization.

2043451671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681150560.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2043451671 is about 45204.5536533655. The cubic root of 2043451671 is about 1268.9800377023.

The spelling of 2043451671 in words is "two billion, forty-three million, four hundred fifty-one thousand, six hundred seventy-one".