2143878041 has 12 divisors (see below), whose sum is σ = 2350978812. Its totient is φ = 1948176384.

The previous prime is 2143878029. The next prime is 2143878043. The reversal of 2143878041 is 1408783412.

It can be written as a sum of positive squares in 6 ways, for example, as 8976016 + 2134902025 = 2996^2 + 46205^2 .

It is not a de Polignac number, because 2143878041 - 2²² = 2139683737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143877986 and 2143878004.

It is not an unprimeable number, because it can be changed into a prime (2143878043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60680 + ... + 89273.

It is an arithmetic number, because the mean of its divisors is an integer number (195914901).

Almost surely, 2^2143878041 is an apocalyptic number.

It is an amenable number.

2143878041 is a deficient number, since it is larger than the sum of its proper divisors (207100771).

2143878041 is a wasteful number, since it uses less digits than its factorization.

2143878041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150028 (or 149999 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 2143878041 is about 46302.0306358155. The cubic root of 2143878041 is about 1289.4366951465.

The spelling of 2143878041 in words is "two billion, one hundred forty-three million, eight hundred seventy-eight thousand, forty-one".