2154733889 has 16 divisors (see below), whose sum is σ = 2741251200. Its totient is φ = 1679010480.

The previous prime is 2154733879. The next prime is 2154733907. The reversal of 2154733889 is 9883374512.

It is not a de Polignac number, because 2154733889 - 2¹² = 2154729793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154733829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281774 + ... + 289319.

It is an arithmetic number, because the mean of its divisors is an integer number (171328200).

Almost surely, 2^2154733889 is an apocalyptic number.

It is an amenable number.

2154733889 is a deficient number, since it is larger than the sum of its proper divisors (586517311).

2154733889 is an equidigital number, since it uses as much as digits as its factorization.

2154733889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571125 (or 571111 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 2154733889 is about 46419.1112474162. Note that the first 3 decimals coincide. The cubic root of 2154733889 is about 1291.6094506037.

The spelling of 2154733889 in words is "two billion, one hundred fifty-four million, seven hundred thirty-three thousand, eight hundred eighty-nine".