2054989813 has 2 divisors, whose sum is σ = 2054989814. Its totient is φ = 2054989812.

The previous prime is 2054989759. The next prime is 2054989837. The reversal of 2054989813 is 3189894502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1873764369 + 181225444 = 43287^2 + 13462^2 .

It is a cyclic number.

It is not a de Polignac number, because 2054989813 - 2²¹ = 2052892661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2054989843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027494906 + 1027494907.

It is an arithmetic number, because the mean of its divisors is an integer number (1027494907).

Almost surely, 2^2054989813 is an apocalyptic number.

It is an amenable number.

2054989813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054989813 is an equidigital number, since it uses as much as digits as its factorization.

2054989813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 2054989813 is about 45331.9954667782. The cubic root of 2054989813 is about 1271.3639453863.

The spelling of 2054989813 in words is "two billion, fifty-four million, nine hundred eighty-nine thousand, eight hundred thirteen".