2144401998 has 32 divisors (see below), whose sum is σ = 4687580160. Its totient is φ = 651050880.

The previous prime is 2144401993. The next prime is 2144402021. The reversal of 2144401998 is 8991044412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144401993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335928 + ... + 342251.

It is an arithmetic number, because the mean of its divisors is an integer number (146486880).

Almost surely, 2^2144401998 is an apocalyptic number.

2144401998 is an abundant number, since it is smaller than the sum of its proper divisors (2543178162).

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

2144401998 is a wasteful number, since it uses less digits than its factorization.

2144401998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678232.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 2144401998 is about 46307.6883249423. The cubic root of 2144401998 is about 1289.5417313376.

The spelling of 2144401998 in words is "two billion, one hundred forty-four million, four hundred one thousand, nine hundred ninety-eight".