2054120309 has 2 divisors, whose sum is σ = 2054120310. Its totient is φ = 2054120308.

The previous prime is 2054120303. The next prime is 2054120329. The reversal of 2054120309 is 9030214502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1922559409 + 131560900 = 43847^2 + 11470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2054120309 - 2⁸ = 2054120053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2054120303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027060154 + 1027060155.

It is an arithmetic number, because the mean of its divisors is an integer number (1027060155).

Almost surely, 2^2054120309 is an apocalyptic number.

It is an amenable number.

2054120309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054120309 is an equidigital number, since it uses as much as digits as its factorization.

2054120309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2054120309 is about 45322.4040514181. The cubic root of 2054120309 is about 1271.1846075977.

The spelling of 2054120309 in words is "two billion, fifty-four million, one hundred twenty thousand, three hundred nine".