2056854209 has 2 divisors, whose sum is σ = 2056854210. Its totient is φ = 2056854208.

The previous prime is 2056854199. The next prime is 2056854271. The reversal of 2056854209 is 9024586502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1276489984 + 780364225 = 35728^2 + 27935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056854209 - 2¹² = 2056850113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2056850209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028427104 + 1028427105.

It is an arithmetic number, because the mean of its divisors is an integer number (1028427105).

Almost surely, 2^2056854209 is an apocalyptic number.

It is an amenable number.

2056854209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056854209 is an equidigital number, since it uses as much as digits as its factorization.

2056854209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 2056854209 is about 45352.5546028005. The cubic root of 2056854209 is about 1271.7483121557.

The spelling of 2056854209 in words is "two billion, fifty-six million, eight hundred fifty-four thousand, two hundred nine".