2054578889 has 16 divisors (see below), whose sum is σ = 2399328000. Its totient is φ = 1739491920.

The previous prime is 2054578879. The next prime is 2054578913. The reversal of 2054578889 is 9888754502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2054578889 - 2⁴ = 2054578873 is a prime.

It is a super-2 number, since 2×2054578889² = 8442588822248948642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2054578849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70979 + ... + 95640.

It is an arithmetic number, because the mean of its divisors is an integer number (149958000).

Almost surely, 2^2054578889 is an apocalyptic number.

It is an amenable number.

2054578889 is a deficient number, since it is larger than the sum of its proper divisors (344749111).

2054578889 is a wasteful number, since it uses less digits than its factorization.

2054578889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166708.

The product of its (nonzero) digits is 6451200, while the sum is 56.

The square root of 2054578889 is about 45327.4628564185. The cubic root of 2054578889 is about 1271.2791973936.

The spelling of 2054578889 in words is "two billion, fifty-four million, five hundred seventy-eight thousand, eight hundred eighty-nine".