2054155889 has 2 divisors, whose sum is σ = 2054155890. Its totient is φ = 2054155888.

The previous prime is 2054155861. The next prime is 2054155891. The reversal of 2054155889 is 9885514502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1534680625 + 519475264 = 39175^2 + 22792^2 .

It is a cyclic number.

It is not a de Polignac number, because 2054155889 - 2²⁰ = 2053107313 is a prime.

Together with 2054155891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2054155819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027077944 + 1027077945.

It is an arithmetic number, because the mean of its divisors is an integer number (1027077945).

Almost surely, 2^2054155889 is an apocalyptic number.

It is an amenable number.

2054155889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054155889 is an equidigital number, since it uses as much as digits as its factorization.

2054155889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576000, while the sum is 47.

The square root of 2054155889 is about 45322.7965708207. The cubic root of 2054155889 is about 1271.1919470716.

The spelling of 2054155889 in words is "two billion, fifty-four million, one hundred fifty-five thousand, eight hundred eighty-nine".