2909128043 has 6 divisors (see below), whose sum is σ = 3090319716. Its totient is φ = 2738002592.

The previous prime is 2909127979. The next prime is 2909128051. The reversal of 2909128043 is 3408219092.

It is not a de Polignac number, because 2909128043 - 2⁶ = 2909127979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2909127988 and 2909128006.

It is not an unprimeable number, because it can be changed into a prime (2909128073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5032805 + ... + 5033382.

It is an arithmetic number, because the mean of its divisors is an integer number (515053286).

Almost surely, 2^2909128043 is an apocalyptic number.

2909128043 is a deficient number, since it is larger than the sum of its proper divisors (181191673).

2909128043 is a wasteful number, since it uses less digits than its factorization.

2909128043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10066221 (or 10066204 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2909128043 is about 53936.3332365114. Note that the first 3 decimals coincide. The cubic root of 2909128043 is about 1427.5377850247.

The spelling of 2909128043 in words is "two billion, nine hundred nine million, one hundred twenty-eight thousand, forty-three".