2840343849 has 36 divisors (see below), whose sum is σ = 4801253184. Its totient is φ = 1613292912.

The previous prime is 2840343823. The next prime is 2840343859. The reversal of 2840343849 is 9483430482.

It is not a de Polignac number, because 2840343849 - 2⁵ = 2840343817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2840343859) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 54364 + ... + 92930.

It is an arithmetic number, because the mean of its divisors is an integer number (133368144).

Almost surely, 2^2840343849 is an apocalyptic number.

It is an amenable number.

2840343849 is a deficient number, since it is larger than the sum of its proper divisors (1960909335).

2840343849 is a wasteful number, since it uses less digits than its factorization.

2840343849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38754 (or 38744 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 2840343849 is about 53294.8763860092. The cubic root of 2840343849 is about 1416.1969002858.

The spelling of 2840343849 in words is "two billion, eight hundred forty million, three hundred forty-three thousand, eight hundred forty-nine".