2144477898 has 24 divisors (see below), whose sum is σ = 4673233188. Its totient is φ = 710692992.

The previous prime is 2144477879. The next prime is 2144477927. The reversal of 2144477898 is 8987744412.

It can be written as a sum of positive squares in 2 ways, for example, as 1739140209 + 405337689 = 41703^2 + 20133^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 341215 + ... + 347442.

Almost surely, 2^2144477898 is an apocalyptic number.

2144477898 is an abundant number, since it is smaller than the sum of its proper divisors (2528755290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2144477898 is a wasteful number, since it uses less digits than its factorization.

2144477898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688838 (or 688835 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 2144477898 is about 46308.5078360338. The cubic root of 2144477898 is about 1289.5569453791.

The spelling of 2144477898 in words is "two billion, one hundred forty-four million, four hundred seventy-seven thousand, eight hundred ninety-eight".