2054943209 has 4 divisors (see below), whose sum is σ = 2241756240. Its totient is φ = 1868130180.

The previous prime is 2054943197. The next prime is 2054943287. The reversal of 2054943209 is 9023494502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2054943209 - 2⁴ = 2054943193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2054946209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93406499 + ... + 93406520.

It is an arithmetic number, because the mean of its divisors is an integer number (560439060).

Almost surely, 2^2054943209 is an apocalyptic number.

It is an amenable number.

2054943209 is a deficient number, since it is larger than the sum of its proper divisors (186813031).

2054943209 is a wasteful number, since it uses less digits than its factorization.

2054943209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186813030.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 2054943209 is about 45331.4814339880. The cubic root of 2054943209 is about 1271.3543344557.

The spelling of 2054943209 in words is "two billion, fifty-four million, nine hundred forty-three thousand, two hundred nine".